./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe021_power.opt_pso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/safe021_power.opt_pso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bcb38a6f 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/safe021_power.opt_pso.opt.i ./goblint.2024-05-21_14-57-05.files/protection/safe021_power.opt_pso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-bcb38a6-m [2024-06-04 15:41:02,564 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-04 15:41:02,640 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-04 15:41:02,646 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-04 15:41:02,646 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-04 15:41:02,682 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-04 15:41:02,684 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-04 15:41:02,684 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-04 15:41:02,685 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-04 15:41:02,688 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-04 15:41:02,689 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-04 15:41:02,689 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-04 15:41:02,690 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-04 15:41:02,691 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-04 15:41:02,692 INFO L153 SettingsManager]: * Use SBE=true [2024-06-04 15:41:02,692 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-04 15:41:02,692 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-04 15:41:02,693 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-04 15:41:02,693 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-04 15:41:02,693 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-04 15:41:02,693 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-04 15:41:02,694 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-04 15:41:02,694 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-04 15:41:02,694 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-04 15:41:02,695 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-04 15:41:02,695 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-04 15:41:02,695 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-04 15:41:02,696 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-04 15:41:02,696 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-04 15:41:02,697 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-04 15:41:02,698 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-04 15:41:02,698 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-04 15:41:02,698 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 15:41:02,698 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-04 15:41:02,699 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-04 15:41:02,699 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-04 15:41:02,699 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-04 15:41:02,699 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-04 15:41:02,700 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-04 15:41:02,700 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-04 15:41:02,700 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-04 15:41:02,701 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-04 15:41:02,701 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-04 15:41:02,701 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-04 15:41:02,962 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-04 15:41:02,982 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-04 15:41:02,985 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-04 15:41:02,986 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-04 15:41:02,987 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-04 15:41:02,988 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/safe021_power.opt_pso.opt.yml/witness.yml [2024-06-04 15:41:03,159 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-04 15:41:03,161 INFO L274 PluginConnector]: CDTParser initialized [2024-06-04 15:41:03,162 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe021_power.opt_pso.opt.i [2024-06-04 15:41:04,355 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-04 15:41:04,632 INFO L384 CDTParser]: Found 1 translation units. [2024-06-04 15:41:04,633 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe021_power.opt_pso.opt.i [2024-06-04 15:41:04,652 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ed4c94af/24097acfa33a47d99c55967cfd988599/FLAGe5fdf4dd4 [2024-06-04 15:41:04,664 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ed4c94af/24097acfa33a47d99c55967cfd988599 [2024-06-04 15:41:04,664 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-04 15:41:04,666 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-04 15:41:04,667 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-04 15:41:04,667 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-04 15:41:04,671 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-04 15:41:04,672 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 03:41:03" (1/2) ... [2024-06-04 15:41:04,673 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46183f27 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:41:04, skipping insertion in model container [2024-06-04 15:41:04,673 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 03:41:03" (1/2) ... [2024-06-04 15:41:04,675 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@221e508a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:41:04, skipping insertion in model container [2024-06-04 15:41:04,675 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 03:41:04" (2/2) ... [2024-06-04 15:41:04,675 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46183f27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:41:04, skipping insertion in model container [2024-06-04 15:41:04,676 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 03:41:04" (2/2) ... [2024-06-04 15:41:04,677 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-04 15:41:04,767 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-04 15:41:04,768 INFO L97 edCorrectnessWitness]: Location invariant before [L825-L825] (((((((((((((((((! multithreaded || x$r_buff1_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((((0 <= x$w_buff0 && x$w_buff0 <= 2) && x$w_buff0 <= 127) && x$w_buff0 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)))) && (! multithreaded || ((((0 <= x$w_buff1 && x$w_buff1 <= 2) && x$w_buff1 <= 127) && x$w_buff1 % 2 == 0) && (x$w_buff1 == 0 || x$w_buff1 == 2)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1))) [2024-06-04 15:41:04,768 INFO L97 edCorrectnessWitness]: Location invariant before [L826-L826] (((((((((((((((((! multithreaded || x$r_buff1_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((((0 <= x$w_buff0 && x$w_buff0 <= 2) && x$w_buff0 <= 127) && x$w_buff0 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)))) && (! multithreaded || ((((0 <= x$w_buff1 && x$w_buff1 <= 2) && x$w_buff1 <= 127) && x$w_buff1 % 2 == 0) && (x$w_buff1 == 0 || x$w_buff1 == 2)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1))) [2024-06-04 15:41:04,768 INFO L97 edCorrectnessWitness]: Location invariant before [L823-L823] (((((((((((((((((! multithreaded || x$r_buff1_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((((0 <= x$w_buff0 && x$w_buff0 <= 2) && x$w_buff0 <= 127) && x$w_buff0 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)))) && (! multithreaded || ((((0 <= x$w_buff1 && x$w_buff1 <= 2) && x$w_buff1 <= 127) && x$w_buff1 % 2 == 0) && (x$w_buff1 == 0 || x$w_buff1 == 2)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1))) [2024-06-04 15:41:04,768 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-04 15:41:04,768 INFO L106 edCorrectnessWitness]: ghost_update [L821-L821] multithreaded = 1; [2024-06-04 15:41:04,814 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-04 15:41:05,135 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 15:41:05,148 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-04 15:41:05,291 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 15:41:05,331 INFO L206 MainTranslator]: Completed translation [2024-06-04 15:41:05,331 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:41:05 WrapperNode [2024-06-04 15:41:05,331 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-04 15:41:05,332 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-04 15:41:05,333 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-04 15:41:05,333 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-04 15:41:05,340 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:41:05" (1/1) ... [2024-06-04 15:41:05,359 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:41:05" (1/1) ... [2024-06-04 15:41:05,398 INFO L138 Inliner]: procedures = 175, calls = 43, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 144 [2024-06-04 15:41:05,399 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-04 15:41:05,399 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-04 15:41:05,399 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-04 15:41:05,400 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-04 15:41:05,410 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:41:05" (1/1) ... [2024-06-04 15:41:05,410 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:41:05" (1/1) ... [2024-06-04 15:41:05,414 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:41:05" (1/1) ... [2024-06-04 15:41:05,431 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]. [2024-06-04 15:41:05,431 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:41:05" (1/1) ... [2024-06-04 15:41:05,432 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:41:05" (1/1) ... [2024-06-04 15:41:05,441 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:41:05" (1/1) ... [2024-06-04 15:41:05,443 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:41:05" (1/1) ... [2024-06-04 15:41:05,445 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:41:05" (1/1) ... [2024-06-04 15:41:05,446 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:41:05" (1/1) ... [2024-06-04 15:41:05,450 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-04 15:41:05,451 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-04 15:41:05,451 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-04 15:41:05,451 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-04 15:41:05,452 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:41:05" (1/1) ... [2024-06-04 15:41:05,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 15:41:05,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 15:41:05,494 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) [2024-06-04 15:41:05,524 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 [2024-06-04 15:41:05,543 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-04 15:41:05,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-04 15:41:05,544 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-04 15:41:05,545 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-04 15:41:05,545 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-04 15:41:05,545 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-04 15:41:05,545 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-04 15:41:05,545 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-04 15:41:05,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-04 15:41:05,546 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-04 15:41:05,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-04 15:41:05,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-04 15:41:05,548 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-04 15:41:05,687 INFO L244 CfgBuilder]: Building ICFG [2024-06-04 15:41:05,689 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-04 15:41:06,092 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-04 15:41:06,092 INFO L293 CfgBuilder]: Performing block encoding [2024-06-04 15:41:06,253 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-04 15:41:06,253 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-04 15:41:06,254 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 03:41:06 BoogieIcfgContainer [2024-06-04 15:41:06,254 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-04 15:41:06,257 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-04 15:41:06,257 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-04 15:41:06,260 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-04 15:41:06,261 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 03:41:03" (1/4) ... [2024-06-04 15:41:06,261 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5065be8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 03:41:06, skipping insertion in model container [2024-06-04 15:41:06,261 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.06 03:41:04" (2/4) ... [2024-06-04 15:41:06,262 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5065be8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 03:41:06, skipping insertion in model container [2024-06-04 15:41:06,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:41:05" (3/4) ... [2024-06-04 15:41:06,262 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5065be8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 03:41:06, skipping insertion in model container [2024-06-04 15:41:06,263 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 03:41:06" (4/4) ... [2024-06-04 15:41:06,264 INFO L112 eAbstractionObserver]: Analyzing ICFG safe021_power.opt_pso.opt.i [2024-06-04 15:41:06,280 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-04 15:41:06,280 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-04 15:41:06,280 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-04 15:41:06,335 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-04 15:41:06,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 41 transitions, 94 flow [2024-06-04 15:41:06,403 INFO L124 PetriNetUnfolderBase]: 0/38 cut-off events. [2024-06-04 15:41:06,404 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 15:41:06,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 38 events. 0/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 64 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-04 15:41:06,407 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 41 transitions, 94 flow [2024-06-04 15:41:06,410 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 32 transitions, 73 flow [2024-06-04 15:41:06,424 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-04 15:41:06,432 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;@43338fd0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-04 15:41:06,432 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-04 15:41:06,439 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-04 15:41:06,439 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-04 15:41:06,439 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 15:41:06,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:41:06,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-04 15:41:06,440 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:41:06,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:41:06,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1322398027, now seen corresponding path program 1 times [2024-06-04 15:41:06,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:41:06,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644199293] [2024-06-04 15:41:06,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:41:06,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:41:06,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:41:07,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:41:07,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:41:07,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644199293] [2024-06-04 15:41:07,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644199293] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:41:07,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:41:07,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-04 15:41:07,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885788552] [2024-06-04 15:41:07,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:41:07,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-04 15:41:07,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:41:07,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-04 15:41:07,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-04 15:41:07,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-04 15:41:07,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:07,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:41:07,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-04 15:41:07,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:41:08,204 INFO L124 PetriNetUnfolderBase]: 1152/1756 cut-off events. [2024-06-04 15:41:08,204 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2024-06-04 15:41:08,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3598 conditions, 1756 events. 1152/1756 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 8215 event pairs, 693 based on Foata normal form. 2/1710 useless extension candidates. Maximal degree in co-relation 3583. Up to 1738 conditions per place. [2024-06-04 15:41:08,222 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 34 selfloop transitions, 4 changer transitions 0/43 dead transitions. [2024-06-04 15:41:08,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 43 transitions, 177 flow [2024-06-04 15:41:08,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-04 15:41:08,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-04 15:41:08,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2024-06-04 15:41:08,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5772357723577236 [2024-06-04 15:41:08,235 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 73 flow. Second operand 3 states and 71 transitions. [2024-06-04 15:41:08,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 43 transitions, 177 flow [2024-06-04 15:41:08,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 43 transitions, 172 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-04 15:41:08,242 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 100 flow [2024-06-04 15:41:08,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2024-06-04 15:41:08,247 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2024-06-04 15:41:08,247 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 100 flow [2024-06-04 15:41:08,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:08,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:41:08,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:41:08,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-04 15:41:08,248 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:41:08,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:41:08,249 INFO L85 PathProgramCache]: Analyzing trace with hash 485861844, now seen corresponding path program 1 times [2024-06-04 15:41:08,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:41:08,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391102681] [2024-06-04 15:41:08,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:41:08,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:41:08,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:41:09,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:41:09,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:41:09,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391102681] [2024-06-04 15:41:09,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391102681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:41:09,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:41:09,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-04 15:41:09,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314261664] [2024-06-04 15:41:09,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:41:09,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-04 15:41:09,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:41:09,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-04 15:41:09,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-04 15:41:09,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-04 15:41:09,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 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) [2024-06-04 15:41:09,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:41:09,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-04 15:41:09,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:41:09,493 INFO L124 PetriNetUnfolderBase]: 1395/2102 cut-off events. [2024-06-04 15:41:09,493 INFO L125 PetriNetUnfolderBase]: For 316/316 co-relation queries the response was YES. [2024-06-04 15:41:09,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4856 conditions, 2102 events. 1395/2102 cut-off events. For 316/316 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 9499 event pairs, 862 based on Foata normal form. 3/2102 useless extension candidates. Maximal degree in co-relation 4841. Up to 2073 conditions per place. [2024-06-04 15:41:09,506 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 44 selfloop transitions, 7 changer transitions 0/55 dead transitions. [2024-06-04 15:41:09,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 55 transitions, 258 flow [2024-06-04 15:41:09,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-04 15:41:09,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-04 15:41:09,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 87 transitions. [2024-06-04 15:41:09,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5304878048780488 [2024-06-04 15:41:09,511 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 100 flow. Second operand 4 states and 87 transitions. [2024-06-04 15:41:09,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 55 transitions, 258 flow [2024-06-04 15:41:09,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 55 transitions, 252 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-04 15:41:09,514 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 152 flow [2024-06-04 15:41:09,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=152, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2024-06-04 15:41:09,515 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2024-06-04 15:41:09,516 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 152 flow [2024-06-04 15:41:09,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 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) [2024-06-04 15:41:09,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:41:09,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:41:09,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-04 15:41:09,519 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:41:09,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:41:09,520 INFO L85 PathProgramCache]: Analyzing trace with hash -2118150516, now seen corresponding path program 1 times [2024-06-04 15:41:09,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:41:09,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517748541] [2024-06-04 15:41:09,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:41:09,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:41:09,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:41:10,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:41:10,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:41:10,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517748541] [2024-06-04 15:41:10,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517748541] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:41:10,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:41:10,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-04 15:41:10,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27777447] [2024-06-04 15:41:10,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:41:10,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-04 15:41:10,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:41:10,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-04 15:41:10,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-04 15:41:10,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-04 15:41:10,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 152 flow. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:10,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:41:10,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-04 15:41:10,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:41:10,754 INFO L124 PetriNetUnfolderBase]: 1383/2084 cut-off events. [2024-06-04 15:41:10,754 INFO L125 PetriNetUnfolderBase]: For 1050/1058 co-relation queries the response was YES. [2024-06-04 15:41:10,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5363 conditions, 2084 events. 1383/2084 cut-off events. For 1050/1058 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 9456 event pairs, 612 based on Foata normal form. 12/2093 useless extension candidates. Maximal degree in co-relation 5345. Up to 2025 conditions per place. [2024-06-04 15:41:10,769 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 52 selfloop transitions, 10 changer transitions 0/66 dead transitions. [2024-06-04 15:41:10,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 66 transitions, 344 flow [2024-06-04 15:41:10,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 15:41:10,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 15:41:10,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 107 transitions. [2024-06-04 15:41:10,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5219512195121951 [2024-06-04 15:41:10,775 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 152 flow. Second operand 5 states and 107 transitions. [2024-06-04 15:41:10,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 66 transitions, 344 flow [2024-06-04 15:41:10,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 66 transitions, 342 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-06-04 15:41:10,780 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 198 flow [2024-06-04 15:41:10,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=198, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2024-06-04 15:41:10,781 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2024-06-04 15:41:10,782 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 198 flow [2024-06-04 15:41:10,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:10,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:41:10,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:41:10,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-04 15:41:10,783 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:41:10,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:41:10,784 INFO L85 PathProgramCache]: Analyzing trace with hash 271901579, now seen corresponding path program 1 times [2024-06-04 15:41:10,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:41:10,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666385770] [2024-06-04 15:41:10,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:41:10,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:41:10,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:41:12,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:41:12,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:41:12,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666385770] [2024-06-04 15:41:12,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666385770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:41:12,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:41:12,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:41:12,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430937677] [2024-06-04 15:41:12,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:41:12,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:41:12,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:41:12,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:41:12,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:41:12,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-04 15:41:12,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 198 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) [2024-06-04 15:41:12,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:41:12,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-04 15:41:12,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:41:12,600 INFO L124 PetriNetUnfolderBase]: 1374/2069 cut-off events. [2024-06-04 15:41:12,601 INFO L125 PetriNetUnfolderBase]: For 1912/1920 co-relation queries the response was YES. [2024-06-04 15:41:12,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5862 conditions, 2069 events. 1374/2069 cut-off events. For 1912/1920 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 9306 event pairs, 472 based on Foata normal form. 12/2078 useless extension candidates. Maximal degree in co-relation 5841. Up to 1980 conditions per place. [2024-06-04 15:41:12,613 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 56 selfloop transitions, 12 changer transitions 0/72 dead transitions. [2024-06-04 15:41:12,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 72 transitions, 408 flow [2024-06-04 15:41:12,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:41:12,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:41:12,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 122 transitions. [2024-06-04 15:41:12,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4959349593495935 [2024-06-04 15:41:12,616 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 198 flow. Second operand 6 states and 122 transitions. [2024-06-04 15:41:12,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 72 transitions, 408 flow [2024-06-04 15:41:12,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 72 transitions, 386 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-04 15:41:12,619 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 217 flow [2024-06-04 15:41:12,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=217, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2024-06-04 15:41:12,620 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 11 predicate places. [2024-06-04 15:41:12,620 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 217 flow [2024-06-04 15:41:12,621 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) [2024-06-04 15:41:12,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:41:12,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:41:12,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-04 15:41:12,621 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:41:12,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:41:12,622 INFO L85 PathProgramCache]: Analyzing trace with hash -713409677, now seen corresponding path program 1 times [2024-06-04 15:41:12,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:41:12,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890190515] [2024-06-04 15:41:12,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:41:12,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:41:12,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:41:13,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:41:13,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:41:13,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890190515] [2024-06-04 15:41:13,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890190515] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:41:13,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:41:13,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 15:41:13,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562358068] [2024-06-04 15:41:13,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:41:13,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 15:41:13,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:41:13,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 15:41:13,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-04 15:41:13,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-04 15:41:13,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 217 flow. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:13,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:41:13,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-04 15:41:13,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:41:13,953 INFO L124 PetriNetUnfolderBase]: 1245/1902 cut-off events. [2024-06-04 15:41:13,954 INFO L125 PetriNetUnfolderBase]: For 2916/2940 co-relation queries the response was YES. [2024-06-04 15:41:13,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5682 conditions, 1902 events. 1245/1902 cut-off events. For 2916/2940 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 8786 event pairs, 585 based on Foata normal form. 4/1836 useless extension candidates. Maximal degree in co-relation 5660. Up to 1826 conditions per place. [2024-06-04 15:41:13,965 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 44 selfloop transitions, 10 changer transitions 0/63 dead transitions. [2024-06-04 15:41:13,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 63 transitions, 379 flow [2024-06-04 15:41:13,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 15:41:13,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 15:41:13,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 91 transitions. [2024-06-04 15:41:13,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44390243902439025 [2024-06-04 15:41:13,967 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 217 flow. Second operand 5 states and 91 transitions. [2024-06-04 15:41:13,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 63 transitions, 379 flow [2024-06-04 15:41:13,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 63 transitions, 348 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-04 15:41:13,975 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 257 flow [2024-06-04 15:41:13,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=257, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2024-06-04 15:41:13,977 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 13 predicate places. [2024-06-04 15:41:13,977 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 257 flow [2024-06-04 15:41:13,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:13,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:41:13,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:41:13,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-04 15:41:13,979 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:41:13,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:41:13,980 INFO L85 PathProgramCache]: Analyzing trace with hash -674824427, now seen corresponding path program 1 times [2024-06-04 15:41:13,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:41:13,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987700573] [2024-06-04 15:41:13,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:41:13,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:41:14,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:41:14,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:41:14,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:41:14,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987700573] [2024-06-04 15:41:14,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987700573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:41:14,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:41:14,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:41:14,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440363090] [2024-06-04 15:41:14,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:41:14,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:41:14,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:41:14,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:41:14,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:41:15,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-04 15:41:15,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 257 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:15,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:41:15,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-04 15:41:15,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:41:15,465 INFO L124 PetriNetUnfolderBase]: 1476/2248 cut-off events. [2024-06-04 15:41:15,466 INFO L125 PetriNetUnfolderBase]: For 4593/4613 co-relation queries the response was YES. [2024-06-04 15:41:15,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7248 conditions, 2248 events. 1476/2248 cut-off events. For 4593/4613 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 10519 event pairs, 721 based on Foata normal form. 2/2213 useless extension candidates. Maximal degree in co-relation 7223. Up to 2148 conditions per place. [2024-06-04 15:41:15,480 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 56 selfloop transitions, 11 changer transitions 0/75 dead transitions. [2024-06-04 15:41:15,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 75 transitions, 477 flow [2024-06-04 15:41:15,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:41:15,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:41:15,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 101 transitions. [2024-06-04 15:41:15,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4105691056910569 [2024-06-04 15:41:15,482 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 257 flow. Second operand 6 states and 101 transitions. [2024-06-04 15:41:15,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 75 transitions, 477 flow [2024-06-04 15:41:15,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 75 transitions, 459 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-04 15:41:15,487 INFO L231 Difference]: Finished difference. Result has 61 places, 60 transitions, 339 flow [2024-06-04 15:41:15,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=339, PETRI_PLACES=61, PETRI_TRANSITIONS=60} [2024-06-04 15:41:15,490 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 19 predicate places. [2024-06-04 15:41:15,490 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 60 transitions, 339 flow [2024-06-04 15:41:15,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:15,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:41:15,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:41:15,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-04 15:41:15,491 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:41:15,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:41:15,491 INFO L85 PathProgramCache]: Analyzing trace with hash 402277182, now seen corresponding path program 1 times [2024-06-04 15:41:15,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:41:15,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698906877] [2024-06-04 15:41:15,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:41:15,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:41:15,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:41:16,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:41:16,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:41:16,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698906877] [2024-06-04 15:41:16,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698906877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:41:16,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:41:16,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:41:16,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993545787] [2024-06-04 15:41:16,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:41:16,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:41:16,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:41:16,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:41:16,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:41:16,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-04 15:41:16,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 60 transitions, 339 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:16,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:41:16,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-04 15:41:16,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:41:16,910 INFO L124 PetriNetUnfolderBase]: 1530/2301 cut-off events. [2024-06-04 15:41:16,910 INFO L125 PetriNetUnfolderBase]: For 5834/5868 co-relation queries the response was YES. [2024-06-04 15:41:16,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8113 conditions, 2301 events. 1530/2301 cut-off events. For 5834/5868 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 10412 event pairs, 699 based on Foata normal form. 14/2304 useless extension candidates. Maximal degree in co-relation 8084. Up to 2251 conditions per place. [2024-06-04 15:41:16,936 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 61 selfloop transitions, 13 changer transitions 0/81 dead transitions. [2024-06-04 15:41:16,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 81 transitions, 549 flow [2024-06-04 15:41:16,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:41:16,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:41:16,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 104 transitions. [2024-06-04 15:41:16,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42276422764227645 [2024-06-04 15:41:16,938 INFO L175 Difference]: Start difference. First operand has 61 places, 60 transitions, 339 flow. Second operand 6 states and 104 transitions. [2024-06-04 15:41:16,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 81 transitions, 549 flow [2024-06-04 15:41:16,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 81 transitions, 543 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-04 15:41:16,944 INFO L231 Difference]: Finished difference. Result has 66 places, 63 transitions, 389 flow [2024-06-04 15:41:16,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=389, PETRI_PLACES=66, PETRI_TRANSITIONS=63} [2024-06-04 15:41:16,946 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 24 predicate places. [2024-06-04 15:41:16,946 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 63 transitions, 389 flow [2024-06-04 15:41:16,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:16,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:41:16,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:41:16,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-04 15:41:16,947 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:41:16,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:41:16,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1608086098, now seen corresponding path program 2 times [2024-06-04 15:41:16,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:41:16,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102436113] [2024-06-04 15:41:16,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:41:16,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:41:16,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:41:17,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:41:17,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:41:17,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102436113] [2024-06-04 15:41:17,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102436113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:41:17,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:41:17,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:41:17,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990772323] [2024-06-04 15:41:17,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:41:17,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:41:17,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:41:17,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:41:17,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:41:17,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-04 15:41:17,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 63 transitions, 389 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:17,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:41:17,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-04 15:41:17,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:41:18,420 INFO L124 PetriNetUnfolderBase]: 1554/2338 cut-off events. [2024-06-04 15:41:18,421 INFO L125 PetriNetUnfolderBase]: For 7859/7920 co-relation queries the response was YES. [2024-06-04 15:41:18,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8912 conditions, 2338 events. 1554/2338 cut-off events. For 7859/7920 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 10652 event pairs, 702 based on Foata normal form. 15/2341 useless extension candidates. Maximal degree in co-relation 8880. Up to 2264 conditions per place. [2024-06-04 15:41:18,464 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 58 selfloop transitions, 19 changer transitions 0/84 dead transitions. [2024-06-04 15:41:18,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 84 transitions, 625 flow [2024-06-04 15:41:18,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:41:18,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:41:18,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 103 transitions. [2024-06-04 15:41:18,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4186991869918699 [2024-06-04 15:41:18,466 INFO L175 Difference]: Start difference. First operand has 66 places, 63 transitions, 389 flow. Second operand 6 states and 103 transitions. [2024-06-04 15:41:18,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 84 transitions, 625 flow [2024-06-04 15:41:18,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 84 transitions, 593 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-04 15:41:18,473 INFO L231 Difference]: Finished difference. Result has 69 places, 69 transitions, 469 flow [2024-06-04 15:41:18,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=469, PETRI_PLACES=69, PETRI_TRANSITIONS=69} [2024-06-04 15:41:18,474 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 27 predicate places. [2024-06-04 15:41:18,475 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 69 transitions, 469 flow [2024-06-04 15:41:18,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:18,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:41:18,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:41:18,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-04 15:41:18,475 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:41:18,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:41:18,476 INFO L85 PathProgramCache]: Analyzing trace with hash 555280094, now seen corresponding path program 1 times [2024-06-04 15:41:18,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:41:18,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328080852] [2024-06-04 15:41:18,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:41:18,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:41:18,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:41:19,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:41:19,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:41:19,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328080852] [2024-06-04 15:41:19,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328080852] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:41:19,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:41:19,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:41:19,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720073801] [2024-06-04 15:41:19,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:41:19,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:41:19,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:41:19,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:41:19,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:41:19,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-04 15:41:19,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 69 transitions, 469 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:19,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:41:19,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-04 15:41:19,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:41:20,279 INFO L124 PetriNetUnfolderBase]: 1538/2324 cut-off events. [2024-06-04 15:41:20,279 INFO L125 PetriNetUnfolderBase]: For 10438/10488 co-relation queries the response was YES. [2024-06-04 15:41:20,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9196 conditions, 2324 events. 1538/2324 cut-off events. For 10438/10488 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 10920 event pairs, 706 based on Foata normal form. 2/2283 useless extension candidates. Maximal degree in co-relation 9162. Up to 2214 conditions per place. [2024-06-04 15:41:20,296 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 66 selfloop transitions, 14 changer transitions 0/91 dead transitions. [2024-06-04 15:41:20,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 91 transitions, 691 flow [2024-06-04 15:41:20,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:41:20,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:41:20,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 116 transitions. [2024-06-04 15:41:20,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40418118466898956 [2024-06-04 15:41:20,298 INFO L175 Difference]: Start difference. First operand has 69 places, 69 transitions, 469 flow. Second operand 7 states and 116 transitions. [2024-06-04 15:41:20,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 91 transitions, 691 flow [2024-06-04 15:41:20,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 91 transitions, 647 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-04 15:41:20,310 INFO L231 Difference]: Finished difference. Result has 73 places, 72 transitions, 481 flow [2024-06-04 15:41:20,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=481, PETRI_PLACES=73, PETRI_TRANSITIONS=72} [2024-06-04 15:41:20,311 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 31 predicate places. [2024-06-04 15:41:20,311 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 72 transitions, 481 flow [2024-06-04 15:41:20,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:20,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:41:20,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:41:20,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-04 15:41:20,311 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:41:20,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:41:20,312 INFO L85 PathProgramCache]: Analyzing trace with hash -143683142, now seen corresponding path program 1 times [2024-06-04 15:41:20,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:41:20,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893927069] [2024-06-04 15:41:20,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:41:20,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:41:20,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:41:21,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:41:21,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:41:21,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893927069] [2024-06-04 15:41:21,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893927069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:41:21,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:41:21,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:41:21,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456858573] [2024-06-04 15:41:21,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:41:21,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:41:21,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:41:21,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:41:21,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:41:21,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-04 15:41:21,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 72 transitions, 481 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:21,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:41:21,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-04 15:41:21,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:41:21,801 INFO L124 PetriNetUnfolderBase]: 1546/2329 cut-off events. [2024-06-04 15:41:21,801 INFO L125 PetriNetUnfolderBase]: For 12530/12569 co-relation queries the response was YES. [2024-06-04 15:41:21,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9842 conditions, 2329 events. 1546/2329 cut-off events. For 12530/12569 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 10729 event pairs, 553 based on Foata normal form. 29/2309 useless extension candidates. Maximal degree in co-relation 9807. Up to 2202 conditions per place. [2024-06-04 15:41:21,822 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 77 selfloop transitions, 19 changer transitions 0/104 dead transitions. [2024-06-04 15:41:21,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 104 transitions, 771 flow [2024-06-04 15:41:21,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:41:21,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:41:21,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-04 15:41:21,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43205574912891986 [2024-06-04 15:41:21,824 INFO L175 Difference]: Start difference. First operand has 73 places, 72 transitions, 481 flow. Second operand 7 states and 124 transitions. [2024-06-04 15:41:21,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 104 transitions, 771 flow [2024-06-04 15:41:21,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 104 transitions, 739 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-04 15:41:21,833 INFO L231 Difference]: Finished difference. Result has 76 places, 78 transitions, 539 flow [2024-06-04 15:41:21,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=539, PETRI_PLACES=76, PETRI_TRANSITIONS=78} [2024-06-04 15:41:21,834 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 34 predicate places. [2024-06-04 15:41:21,834 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 78 transitions, 539 flow [2024-06-04 15:41:21,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:21,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:41:21,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:41:21,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-04 15:41:21,834 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:41:21,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:41:21,835 INFO L85 PathProgramCache]: Analyzing trace with hash 27139444, now seen corresponding path program 1 times [2024-06-04 15:41:21,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:41:21,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918572270] [2024-06-04 15:41:21,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:41:21,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:41:21,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:41:22,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:41:22,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:41:22,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918572270] [2024-06-04 15:41:22,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918572270] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:41:22,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:41:22,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:41:22,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707363100] [2024-06-04 15:41:22,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:41:22,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:41:22,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:41:22,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:41:22,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:41:22,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:41:22,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 78 transitions, 539 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:22,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:41:22,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:41:22,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:41:23,381 INFO L124 PetriNetUnfolderBase]: 1644/2457 cut-off events. [2024-06-04 15:41:23,381 INFO L125 PetriNetUnfolderBase]: For 14095/14095 co-relation queries the response was YES. [2024-06-04 15:41:23,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10886 conditions, 2457 events. 1644/2457 cut-off events. For 14095/14095 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 11077 event pairs, 602 based on Foata normal form. 2/2456 useless extension candidates. Maximal degree in co-relation 10849. Up to 2411 conditions per place. [2024-06-04 15:41:23,400 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 92 selfloop transitions, 14 changer transitions 0/109 dead transitions. [2024-06-04 15:41:23,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 109 transitions, 871 flow [2024-06-04 15:41:23,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:41:23,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:41:23,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 113 transitions. [2024-06-04 15:41:23,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39372822299651566 [2024-06-04 15:41:23,402 INFO L175 Difference]: Start difference. First operand has 76 places, 78 transitions, 539 flow. Second operand 7 states and 113 transitions. [2024-06-04 15:41:23,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 109 transitions, 871 flow [2024-06-04 15:41:23,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 109 transitions, 833 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-04 15:41:23,414 INFO L231 Difference]: Finished difference. Result has 82 places, 87 transitions, 623 flow [2024-06-04 15:41:23,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=623, PETRI_PLACES=82, PETRI_TRANSITIONS=87} [2024-06-04 15:41:23,414 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 40 predicate places. [2024-06-04 15:41:23,414 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 87 transitions, 623 flow [2024-06-04 15:41:23,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:23,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:41:23,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:41:23,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-04 15:41:23,415 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:41:23,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:41:23,415 INFO L85 PathProgramCache]: Analyzing trace with hash -414308612, now seen corresponding path program 2 times [2024-06-04 15:41:23,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:41:23,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696717880] [2024-06-04 15:41:23,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:41:23,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:41:23,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:41:24,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:41:24,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:41:24,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696717880] [2024-06-04 15:41:24,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696717880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:41:24,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:41:24,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:41:24,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944309716] [2024-06-04 15:41:24,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:41:24,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:41:24,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:41:24,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:41:24,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:41:24,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-04 15:41:24,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 87 transitions, 623 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:24,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:41:24,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-04 15:41:24,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:41:25,011 INFO L124 PetriNetUnfolderBase]: 1599/2411 cut-off events. [2024-06-04 15:41:25,011 INFO L125 PetriNetUnfolderBase]: For 18850/18908 co-relation queries the response was YES. [2024-06-04 15:41:25,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11449 conditions, 2411 events. 1599/2411 cut-off events. For 18850/18908 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 11096 event pairs, 532 based on Foata normal form. 30/2394 useless extension candidates. Maximal degree in co-relation 11409. Up to 2228 conditions per place. [2024-06-04 15:41:25,031 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 79 selfloop transitions, 29 changer transitions 0/119 dead transitions. [2024-06-04 15:41:25,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 119 transitions, 1007 flow [2024-06-04 15:41:25,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:41:25,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:41:25,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2024-06-04 15:41:25,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2024-06-04 15:41:25,033 INFO L175 Difference]: Start difference. First operand has 82 places, 87 transitions, 623 flow. Second operand 7 states and 126 transitions. [2024-06-04 15:41:25,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 119 transitions, 1007 flow [2024-06-04 15:41:25,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 119 transitions, 981 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-06-04 15:41:25,052 INFO L231 Difference]: Finished difference. Result has 87 places, 93 transitions, 726 flow [2024-06-04 15:41:25,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=726, PETRI_PLACES=87, PETRI_TRANSITIONS=93} [2024-06-04 15:41:25,053 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 45 predicate places. [2024-06-04 15:41:25,053 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 93 transitions, 726 flow [2024-06-04 15:41:25,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:25,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:41:25,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:41:25,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-04 15:41:25,054 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:41:25,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:41:25,055 INFO L85 PathProgramCache]: Analyzing trace with hash 33568348, now seen corresponding path program 3 times [2024-06-04 15:41:25,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:41:25,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603390447] [2024-06-04 15:41:25,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:41:25,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:41:25,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:41:26,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:41:26,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:41:26,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603390447] [2024-06-04 15:41:26,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603390447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:41:26,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:41:26,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:41:26,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232152270] [2024-06-04 15:41:26,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:41:26,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:41:26,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:41:26,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:41:26,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:41:26,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-04 15:41:26,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 93 transitions, 726 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:26,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:41:26,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-04 15:41:26,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:41:26,573 INFO L124 PetriNetUnfolderBase]: 1605/2424 cut-off events. [2024-06-04 15:41:26,574 INFO L125 PetriNetUnfolderBase]: For 23055/23137 co-relation queries the response was YES. [2024-06-04 15:41:26,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12150 conditions, 2424 events. 1605/2424 cut-off events. For 23055/23137 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 11224 event pairs, 549 based on Foata normal form. 33/2403 useless extension candidates. Maximal degree in co-relation 12108. Up to 2193 conditions per place. [2024-06-04 15:41:26,591 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 72 selfloop transitions, 36 changer transitions 0/119 dead transitions. [2024-06-04 15:41:26,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 119 transitions, 1084 flow [2024-06-04 15:41:26,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:41:26,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:41:26,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-06-04 15:41:26,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4355400696864111 [2024-06-04 15:41:26,593 INFO L175 Difference]: Start difference. First operand has 87 places, 93 transitions, 726 flow. Second operand 7 states and 125 transitions. [2024-06-04 15:41:26,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 119 transitions, 1084 flow [2024-06-04 15:41:26,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 119 transitions, 1044 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-04 15:41:26,613 INFO L231 Difference]: Finished difference. Result has 91 places, 96 transitions, 806 flow [2024-06-04 15:41:26,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=686, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=806, PETRI_PLACES=91, PETRI_TRANSITIONS=96} [2024-06-04 15:41:26,614 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 49 predicate places. [2024-06-04 15:41:26,614 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 96 transitions, 806 flow [2024-06-04 15:41:26,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:26,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:41:26,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:41:26,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-04 15:41:26,615 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:41:26,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:41:26,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1688937694, now seen corresponding path program 2 times [2024-06-04 15:41:26,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:41:26,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343558869] [2024-06-04 15:41:26,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:41:26,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:41:26,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:41:27,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:41:27,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:41:27,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343558869] [2024-06-04 15:41:27,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343558869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:41:27,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:41:27,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:41:27,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453347617] [2024-06-04 15:41:27,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:41:27,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:41:27,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:41:27,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:41:27,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:41:27,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:41:27,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 96 transitions, 806 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:27,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:41:27,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:41:27,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:41:28,024 INFO L124 PetriNetUnfolderBase]: 1695/2533 cut-off events. [2024-06-04 15:41:28,024 INFO L125 PetriNetUnfolderBase]: For 24040/24055 co-relation queries the response was YES. [2024-06-04 15:41:28,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12987 conditions, 2533 events. 1695/2533 cut-off events. For 24040/24055 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 11483 event pairs, 600 based on Foata normal form. 12/2540 useless extension candidates. Maximal degree in co-relation 12943. Up to 2438 conditions per place. [2024-06-04 15:41:28,046 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 97 selfloop transitions, 25 changer transitions 0/125 dead transitions. [2024-06-04 15:41:28,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 125 transitions, 1217 flow [2024-06-04 15:41:28,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:41:28,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:41:28,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 116 transitions. [2024-06-04 15:41:28,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40418118466898956 [2024-06-04 15:41:28,048 INFO L175 Difference]: Start difference. First operand has 91 places, 96 transitions, 806 flow. Second operand 7 states and 116 transitions. [2024-06-04 15:41:28,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 125 transitions, 1217 flow [2024-06-04 15:41:28,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 125 transitions, 1118 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-04 15:41:28,072 INFO L231 Difference]: Finished difference. Result has 94 places, 104 transitions, 845 flow [2024-06-04 15:41:28,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=710, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=845, PETRI_PLACES=94, PETRI_TRANSITIONS=104} [2024-06-04 15:41:28,073 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 52 predicate places. [2024-06-04 15:41:28,073 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 104 transitions, 845 flow [2024-06-04 15:41:28,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:28,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:41:28,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:41:28,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-04 15:41:28,074 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:41:28,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:41:28,074 INFO L85 PathProgramCache]: Analyzing trace with hash 33805684, now seen corresponding path program 3 times [2024-06-04 15:41:28,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:41:28,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217517631] [2024-06-04 15:41:28,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:41:28,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:41:28,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:41:28,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:41:28,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:41:28,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217517631] [2024-06-04 15:41:28,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217517631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:41:28,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:41:28,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:41:28,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950224444] [2024-06-04 15:41:28,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:41:28,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:41:28,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:41:28,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:41:28,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:41:29,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:41:29,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 104 transitions, 845 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:29,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:41:29,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:41:29,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:41:29,406 INFO L124 PetriNetUnfolderBase]: 1690/2526 cut-off events. [2024-06-04 15:41:29,406 INFO L125 PetriNetUnfolderBase]: For 26969/26984 co-relation queries the response was YES. [2024-06-04 15:41:29,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13308 conditions, 2526 events. 1690/2526 cut-off events. For 26969/26984 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 11456 event pairs, 600 based on Foata normal form. 12/2533 useless extension candidates. Maximal degree in co-relation 13262. Up to 2433 conditions per place. [2024-06-04 15:41:29,424 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 94 selfloop transitions, 27 changer transitions 0/124 dead transitions. [2024-06-04 15:41:29,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 124 transitions, 1146 flow [2024-06-04 15:41:29,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:41:29,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:41:29,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 113 transitions. [2024-06-04 15:41:29,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39372822299651566 [2024-06-04 15:41:29,426 INFO L175 Difference]: Start difference. First operand has 94 places, 104 transitions, 845 flow. Second operand 7 states and 113 transitions. [2024-06-04 15:41:29,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 124 transitions, 1146 flow [2024-06-04 15:41:29,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 124 transitions, 1064 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-04 15:41:29,457 INFO L231 Difference]: Finished difference. Result has 96 places, 105 transitions, 836 flow [2024-06-04 15:41:29,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=769, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=836, PETRI_PLACES=96, PETRI_TRANSITIONS=105} [2024-06-04 15:41:29,458 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 54 predicate places. [2024-06-04 15:41:29,458 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 105 transitions, 836 flow [2024-06-04 15:41:29,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:29,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:41:29,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:41:29,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-04 15:41:29,459 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:41:29,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:41:29,459 INFO L85 PathProgramCache]: Analyzing trace with hash 33814612, now seen corresponding path program 1 times [2024-06-04 15:41:29,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:41:29,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148036123] [2024-06-04 15:41:29,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:41:29,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:41:29,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:41:30,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:41:30,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:41:30,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148036123] [2024-06-04 15:41:30,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148036123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:41:30,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:41:30,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:41:30,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663045075] [2024-06-04 15:41:30,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:41:30,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:41:30,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:41:30,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:41:30,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:41:30,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-04 15:41:30,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 105 transitions, 836 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:30,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:41:30,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-04 15:41:30,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:41:31,309 INFO L124 PetriNetUnfolderBase]: 1623/2449 cut-off events. [2024-06-04 15:41:31,309 INFO L125 PetriNetUnfolderBase]: For 30342/30456 co-relation queries the response was YES. [2024-06-04 15:41:31,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12939 conditions, 2449 events. 1623/2449 cut-off events. For 30342/30456 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 11380 event pairs, 538 based on Foata normal form. 4/2416 useless extension candidates. Maximal degree in co-relation 12893. Up to 2308 conditions per place. [2024-06-04 15:41:31,325 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 99 selfloop transitions, 16 changer transitions 0/131 dead transitions. [2024-06-04 15:41:31,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 131 transitions, 1142 flow [2024-06-04 15:41:31,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:41:31,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:41:31,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2024-06-04 15:41:31,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39939024390243905 [2024-06-04 15:41:31,329 INFO L175 Difference]: Start difference. First operand has 96 places, 105 transitions, 836 flow. Second operand 8 states and 131 transitions. [2024-06-04 15:41:31,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 131 transitions, 1142 flow [2024-06-04 15:41:31,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 131 transitions, 1100 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-04 15:41:31,363 INFO L231 Difference]: Finished difference. Result has 100 places, 107 transitions, 853 flow [2024-06-04 15:41:31,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=794, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=853, PETRI_PLACES=100, PETRI_TRANSITIONS=107} [2024-06-04 15:41:31,364 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 58 predicate places. [2024-06-04 15:41:31,364 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 107 transitions, 853 flow [2024-06-04 15:41:31,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:31,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:41:31,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:41:31,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-04 15:41:31,365 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:41:31,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:41:31,365 INFO L85 PathProgramCache]: Analyzing trace with hash 37526301, now seen corresponding path program 1 times [2024-06-04 15:41:31,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:41:31,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283559443] [2024-06-04 15:41:31,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:41:31,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:41:31,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:41:32,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:41:32,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:41:32,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283559443] [2024-06-04 15:41:32,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283559443] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:41:32,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:41:32,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:41:32,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220156816] [2024-06-04 15:41:32,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:41:32,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:41:32,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:41:32,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:41:32,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:41:32,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-04 15:41:32,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 107 transitions, 853 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:32,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:41:32,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-04 15:41:32,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:41:33,231 INFO L124 PetriNetUnfolderBase]: 1586/2390 cut-off events. [2024-06-04 15:41:33,231 INFO L125 PetriNetUnfolderBase]: For 32986/33050 co-relation queries the response was YES. [2024-06-04 15:41:33,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13058 conditions, 2390 events. 1586/2390 cut-off events. For 32986/33050 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 10880 event pairs, 534 based on Foata normal form. 33/2395 useless extension candidates. Maximal degree in co-relation 13011. Up to 2233 conditions per place. [2024-06-04 15:41:33,245 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 95 selfloop transitions, 23 changer transitions 0/133 dead transitions. [2024-06-04 15:41:33,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 133 transitions, 1157 flow [2024-06-04 15:41:33,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:41:33,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:41:33,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-04 15:41:33,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43205574912891986 [2024-06-04 15:41:33,248 INFO L175 Difference]: Start difference. First operand has 100 places, 107 transitions, 853 flow. Second operand 7 states and 124 transitions. [2024-06-04 15:41:33,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 133 transitions, 1157 flow [2024-06-04 15:41:33,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 133 transitions, 1106 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-04 15:41:33,274 INFO L231 Difference]: Finished difference. Result has 101 places, 107 transitions, 860 flow [2024-06-04 15:41:33,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=860, PETRI_PLACES=101, PETRI_TRANSITIONS=107} [2024-06-04 15:41:33,274 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 59 predicate places. [2024-06-04 15:41:33,274 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 107 transitions, 860 flow [2024-06-04 15:41:33,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:33,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:41:33,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:41:33,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-04 15:41:33,275 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:41:33,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:41:33,275 INFO L85 PathProgramCache]: Analyzing trace with hash 841173668, now seen corresponding path program 1 times [2024-06-04 15:41:33,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:41:33,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605331011] [2024-06-04 15:41:33,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:41:33,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:41:33,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:41:34,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:41:34,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:41:34,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605331011] [2024-06-04 15:41:34,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605331011] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:41:34,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:41:34,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:41:34,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764293554] [2024-06-04 15:41:34,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:41:34,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:41:34,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:41:34,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:41:34,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:41:34,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:41:34,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 107 transitions, 860 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-04 15:41:34,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:41:34,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:41:34,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:41:34,794 INFO L124 PetriNetUnfolderBase]: 1696/2533 cut-off events. [2024-06-04 15:41:34,794 INFO L125 PetriNetUnfolderBase]: For 34979/34979 co-relation queries the response was YES. [2024-06-04 15:41:34,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13818 conditions, 2533 events. 1696/2533 cut-off events. For 34979/34979 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 11379 event pairs, 554 based on Foata normal form. 4/2534 useless extension candidates. Maximal degree in co-relation 13770. Up to 2434 conditions per place. [2024-06-04 15:41:34,809 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 127 selfloop transitions, 20 changer transitions 0/150 dead transitions. [2024-06-04 15:41:34,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 150 transitions, 1340 flow [2024-06-04 15:41:34,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:41:34,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:41:34,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-04 15:41:34,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4054878048780488 [2024-06-04 15:41:34,811 INFO L175 Difference]: Start difference. First operand has 101 places, 107 transitions, 860 flow. Second operand 8 states and 133 transitions. [2024-06-04 15:41:34,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 150 transitions, 1340 flow [2024-06-04 15:41:34,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 150 transitions, 1271 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-04 15:41:34,836 INFO L231 Difference]: Finished difference. Result has 106 places, 119 transitions, 977 flow [2024-06-04 15:41:34,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=801, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=977, PETRI_PLACES=106, PETRI_TRANSITIONS=119} [2024-06-04 15:41:34,837 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 64 predicate places. [2024-06-04 15:41:34,837 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 119 transitions, 977 flow [2024-06-04 15:41:34,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-04 15:41:34,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:41:34,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:41:34,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-04 15:41:34,838 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:41:34,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:41:34,838 INFO L85 PathProgramCache]: Analyzing trace with hash 41341533, now seen corresponding path program 1 times [2024-06-04 15:41:34,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:41:34,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538597915] [2024-06-04 15:41:34,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:41:34,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:41:34,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:41:35,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:41:35,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:41:35,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538597915] [2024-06-04 15:41:35,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538597915] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:41:35,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:41:35,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:41:35,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999502119] [2024-06-04 15:41:35,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:41:35,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:41:35,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:41:35,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:41:35,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:41:35,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:41:35,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 119 transitions, 977 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-04 15:41:35,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:41:35,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:41:35,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:41:36,529 INFO L124 PetriNetUnfolderBase]: 1767/2637 cut-off events. [2024-06-04 15:41:36,529 INFO L125 PetriNetUnfolderBase]: For 40583/40583 co-relation queries the response was YES. [2024-06-04 15:41:36,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14938 conditions, 2637 events. 1767/2637 cut-off events. For 40583/40583 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 11895 event pairs, 481 based on Foata normal form. 6/2640 useless extension candidates. Maximal degree in co-relation 14886. Up to 2406 conditions per place. [2024-06-04 15:41:36,545 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 125 selfloop transitions, 34 changer transitions 0/162 dead transitions. [2024-06-04 15:41:36,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 162 transitions, 1553 flow [2024-06-04 15:41:36,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:41:36,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:41:36,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-04 15:41:36,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4176829268292683 [2024-06-04 15:41:36,548 INFO L175 Difference]: Start difference. First operand has 106 places, 119 transitions, 977 flow. Second operand 8 states and 137 transitions. [2024-06-04 15:41:36,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 162 transitions, 1553 flow [2024-06-04 15:41:36,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 162 transitions, 1511 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-06-04 15:41:36,578 INFO L231 Difference]: Finished difference. Result has 114 places, 131 transitions, 1161 flow [2024-06-04 15:41:36,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=935, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1161, PETRI_PLACES=114, PETRI_TRANSITIONS=131} [2024-06-04 15:41:36,579 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 72 predicate places. [2024-06-04 15:41:36,579 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 131 transitions, 1161 flow [2024-06-04 15:41:36,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-04 15:41:36,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:41:36,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:41:36,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-04 15:41:36,580 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:41:36,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:41:36,580 INFO L85 PathProgramCache]: Analyzing trace with hash -155484636, now seen corresponding path program 2 times [2024-06-04 15:41:36,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:41:36,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989961020] [2024-06-04 15:41:36,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:41:36,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:41:36,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:41:37,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:41:37,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:41:37,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989961020] [2024-06-04 15:41:37,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989961020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:41:37,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:41:37,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:41:37,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941009491] [2024-06-04 15:41:37,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:41:37,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:41:37,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:41:37,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:41:37,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:41:37,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:41:37,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 131 transitions, 1161 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-04 15:41:37,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:41:37,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:41:37,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:41:38,085 INFO L124 PetriNetUnfolderBase]: 1811/2701 cut-off events. [2024-06-04 15:41:38,085 INFO L125 PetriNetUnfolderBase]: For 47029/47029 co-relation queries the response was YES. [2024-06-04 15:41:38,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16289 conditions, 2701 events. 1811/2701 cut-off events. For 47029/47029 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 12172 event pairs, 483 based on Foata normal form. 8/2706 useless extension candidates. Maximal degree in co-relation 16233. Up to 2429 conditions per place. [2024-06-04 15:41:38,103 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 127 selfloop transitions, 38 changer transitions 0/168 dead transitions. [2024-06-04 15:41:38,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 168 transitions, 1723 flow [2024-06-04 15:41:38,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:41:38,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:41:38,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-04 15:41:38,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42073170731707316 [2024-06-04 15:41:38,105 INFO L175 Difference]: Start difference. First operand has 114 places, 131 transitions, 1161 flow. Second operand 8 states and 138 transitions. [2024-06-04 15:41:38,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 168 transitions, 1723 flow [2024-06-04 15:41:38,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 168 transitions, 1667 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-06-04 15:41:38,143 INFO L231 Difference]: Finished difference. Result has 119 places, 137 transitions, 1275 flow [2024-06-04 15:41:38,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1109, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1275, PETRI_PLACES=119, PETRI_TRANSITIONS=137} [2024-06-04 15:41:38,144 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 77 predicate places. [2024-06-04 15:41:38,144 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 137 transitions, 1275 flow [2024-06-04 15:41:38,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-04 15:41:38,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:41:38,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:41:38,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-04 15:41:38,145 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:41:38,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:41:38,145 INFO L85 PathProgramCache]: Analyzing trace with hash 41335736, now seen corresponding path program 3 times [2024-06-04 15:41:38,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:41:38,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259751007] [2024-06-04 15:41:38,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:41:38,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:41:38,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:41:38,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:41:38,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:41:38,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259751007] [2024-06-04 15:41:38,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259751007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:41:38,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:41:38,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:41:38,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659725010] [2024-06-04 15:41:38,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:41:38,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:41:38,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:41:38,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:41:38,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:41:39,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:41:39,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 137 transitions, 1275 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-04 15:41:39,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:41:39,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:41:39,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:41:39,622 INFO L124 PetriNetUnfolderBase]: 1814/2705 cut-off events. [2024-06-04 15:41:39,622 INFO L125 PetriNetUnfolderBase]: For 50878/50878 co-relation queries the response was YES. [2024-06-04 15:41:39,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16873 conditions, 2705 events. 1814/2705 cut-off events. For 50878/50878 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 12221 event pairs, 502 based on Foata normal form. 4/2706 useless extension candidates. Maximal degree in co-relation 16815. Up to 2432 conditions per place. [2024-06-04 15:41:39,636 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 129 selfloop transitions, 40 changer transitions 0/172 dead transitions. [2024-06-04 15:41:39,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 172 transitions, 1832 flow [2024-06-04 15:41:39,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:41:39,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:41:39,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-04 15:41:39,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42378048780487804 [2024-06-04 15:41:39,637 INFO L175 Difference]: Start difference. First operand has 119 places, 137 transitions, 1275 flow. Second operand 8 states and 139 transitions. [2024-06-04 15:41:39,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 172 transitions, 1832 flow [2024-06-04 15:41:39,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 172 transitions, 1731 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-04 15:41:39,676 INFO L231 Difference]: Finished difference. Result has 122 places, 141 transitions, 1321 flow [2024-06-04 15:41:39,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1178, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1321, PETRI_PLACES=122, PETRI_TRANSITIONS=141} [2024-06-04 15:41:39,676 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 80 predicate places. [2024-06-04 15:41:39,676 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 141 transitions, 1321 flow [2024-06-04 15:41:39,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-04 15:41:39,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:41:39,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:41:39,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-04 15:41:39,677 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:41:39,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:41:39,678 INFO L85 PathProgramCache]: Analyzing trace with hash -809841551, now seen corresponding path program 2 times [2024-06-04 15:41:39,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:41:39,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118530112] [2024-06-04 15:41:39,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:41:39,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:41:39,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:41:40,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:41:40,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:41:40,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118530112] [2024-06-04 15:41:40,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118530112] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:41:40,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:41:40,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:41:40,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133840253] [2024-06-04 15:41:40,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:41:40,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:41:40,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:41:40,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:41:40,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:41:40,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:41:40,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 141 transitions, 1321 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-04 15:41:40,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:41:40,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:41:40,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:41:41,316 INFO L124 PetriNetUnfolderBase]: 1825/2723 cut-off events. [2024-06-04 15:41:41,316 INFO L125 PetriNetUnfolderBase]: For 55411/55435 co-relation queries the response was YES. [2024-06-04 15:41:41,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17114 conditions, 2723 events. 1825/2723 cut-off events. For 55411/55435 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 12327 event pairs, 528 based on Foata normal form. 18/2736 useless extension candidates. Maximal degree in co-relation 17055. Up to 2587 conditions per place. [2024-06-04 15:41:41,333 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 136 selfloop transitions, 39 changer transitions 0/178 dead transitions. [2024-06-04 15:41:41,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 178 transitions, 1911 flow [2024-06-04 15:41:41,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:41:41,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:41:41,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-06-04 15:41:41,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3902439024390244 [2024-06-04 15:41:41,335 INFO L175 Difference]: Start difference. First operand has 122 places, 141 transitions, 1321 flow. Second operand 9 states and 144 transitions. [2024-06-04 15:41:41,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 178 transitions, 1911 flow [2024-06-04 15:41:41,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 178 transitions, 1836 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-04 15:41:41,385 INFO L231 Difference]: Finished difference. Result has 128 places, 149 transitions, 1439 flow [2024-06-04 15:41:41,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1248, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1439, PETRI_PLACES=128, PETRI_TRANSITIONS=149} [2024-06-04 15:41:41,385 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 86 predicate places. [2024-06-04 15:41:41,386 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 149 transitions, 1439 flow [2024-06-04 15:41:41,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-04 15:41:41,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:41:41,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:41:41,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-04 15:41:41,386 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:41:41,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:41:41,386 INFO L85 PathProgramCache]: Analyzing trace with hash -810108678, now seen corresponding path program 4 times [2024-06-04 15:41:41,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:41:41,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788450243] [2024-06-04 15:41:41,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:41:41,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:41:41,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:41:42,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:41:42,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:41:42,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788450243] [2024-06-04 15:41:42,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788450243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:41:42,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:41:42,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:41:42,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092621321] [2024-06-04 15:41:42,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:41:42,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:41:42,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:41:42,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:41:42,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:41:42,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:41:42,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 149 transitions, 1439 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-04 15:41:42,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:41:42,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:41:42,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:41:42,940 INFO L124 PetriNetUnfolderBase]: 1901/2835 cut-off events. [2024-06-04 15:41:42,940 INFO L125 PetriNetUnfolderBase]: For 63473/63494 co-relation queries the response was YES. [2024-06-04 15:41:42,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18284 conditions, 2835 events. 1901/2835 cut-off events. For 63473/63494 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 12936 event pairs, 509 based on Foata normal form. 15/2843 useless extension candidates. Maximal degree in co-relation 18223. Up to 2322 conditions per place. [2024-06-04 15:41:42,964 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 122 selfloop transitions, 69 changer transitions 0/194 dead transitions. [2024-06-04 15:41:42,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 194 transitions, 2245 flow [2024-06-04 15:41:42,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:41:42,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:41:42,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-04 15:41:42,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43597560975609756 [2024-06-04 15:41:42,965 INFO L175 Difference]: Start difference. First operand has 128 places, 149 transitions, 1439 flow. Second operand 8 states and 143 transitions. [2024-06-04 15:41:42,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 194 transitions, 2245 flow [2024-06-04 15:41:43,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 194 transitions, 2179 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-04 15:41:43,021 INFO L231 Difference]: Finished difference. Result has 132 places, 162 transitions, 1709 flow [2024-06-04 15:41:43,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1373, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1709, PETRI_PLACES=132, PETRI_TRANSITIONS=162} [2024-06-04 15:41:43,022 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 90 predicate places. [2024-06-04 15:41:43,022 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 162 transitions, 1709 flow [2024-06-04 15:41:43,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-04 15:41:43,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:41:43,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:41:43,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-04 15:41:43,023 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:41:43,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:41:43,023 INFO L85 PathProgramCache]: Analyzing trace with hash -817460328, now seen corresponding path program 5 times [2024-06-04 15:41:43,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:41:43,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977583915] [2024-06-04 15:41:43,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:41:43,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:41:43,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:41:43,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:41:43,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:41:43,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977583915] [2024-06-04 15:41:43,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977583915] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:41:43,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:41:43,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:41:43,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504638527] [2024-06-04 15:41:43,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:41:43,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:41:43,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:41:43,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:41:43,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:41:43,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:41:43,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 162 transitions, 1709 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-04 15:41:43,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:41:43,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:41:43,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:41:44,518 INFO L124 PetriNetUnfolderBase]: 1951/2909 cut-off events. [2024-06-04 15:41:44,518 INFO L125 PetriNetUnfolderBase]: For 71439/71460 co-relation queries the response was YES. [2024-06-04 15:41:44,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19747 conditions, 2909 events. 1951/2909 cut-off events. For 71439/71460 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 13310 event pairs, 514 based on Foata normal form. 15/2917 useless extension candidates. Maximal degree in co-relation 19683. Up to 2358 conditions per place. [2024-06-04 15:41:44,540 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 129 selfloop transitions, 68 changer transitions 0/200 dead transitions. [2024-06-04 15:41:44,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 200 transitions, 2539 flow [2024-06-04 15:41:44,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:41:44,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:41:44,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-04 15:41:44,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4481707317073171 [2024-06-04 15:41:44,541 INFO L175 Difference]: Start difference. First operand has 132 places, 162 transitions, 1709 flow. Second operand 8 states and 147 transitions. [2024-06-04 15:41:44,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 200 transitions, 2539 flow [2024-06-04 15:41:44,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 200 transitions, 2463 flow, removed 32 selfloop flow, removed 2 redundant places. [2024-06-04 15:41:44,612 INFO L231 Difference]: Finished difference. Result has 138 places, 166 transitions, 1841 flow [2024-06-04 15:41:44,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1635, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1841, PETRI_PLACES=138, PETRI_TRANSITIONS=166} [2024-06-04 15:41:44,613 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 96 predicate places. [2024-06-04 15:41:44,613 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 166 transitions, 1841 flow [2024-06-04 15:41:44,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-04 15:41:44,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:41:44,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:41:44,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-04 15:41:44,614 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:41:44,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:41:44,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1040625405, now seen corresponding path program 3 times [2024-06-04 15:41:44,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:41:44,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289382378] [2024-06-04 15:41:44,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:41:44,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:41:44,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:41:45,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:41:45,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:41:45,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289382378] [2024-06-04 15:41:45,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289382378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:41:45,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:41:45,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:41:45,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91566132] [2024-06-04 15:41:45,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:41:45,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:41:45,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:41:45,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:41:45,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:41:45,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:41:45,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 166 transitions, 1841 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-04 15:41:45,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:41:45,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:41:45,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:41:46,301 INFO L124 PetriNetUnfolderBase]: 1940/2890 cut-off events. [2024-06-04 15:41:46,301 INFO L125 PetriNetUnfolderBase]: For 74427/74451 co-relation queries the response was YES. [2024-06-04 15:41:46,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19902 conditions, 2890 events. 1940/2890 cut-off events. For 74427/74451 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 13227 event pairs, 545 based on Foata normal form. 18/2903 useless extension candidates. Maximal degree in co-relation 19836. Up to 2788 conditions per place. [2024-06-04 15:41:46,322 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 157 selfloop transitions, 29 changer transitions 0/189 dead transitions. [2024-06-04 15:41:46,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 189 transitions, 2271 flow [2024-06-04 15:41:46,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:41:46,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:41:46,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 128 transitions. [2024-06-04 15:41:46,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3902439024390244 [2024-06-04 15:41:46,324 INFO L175 Difference]: Start difference. First operand has 138 places, 166 transitions, 1841 flow. Second operand 8 states and 128 transitions. [2024-06-04 15:41:46,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 189 transitions, 2271 flow [2024-06-04 15:41:46,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 189 transitions, 2065 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-06-04 15:41:46,400 INFO L231 Difference]: Finished difference. Result has 141 places, 166 transitions, 1701 flow [2024-06-04 15:41:46,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1635, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1701, PETRI_PLACES=141, PETRI_TRANSITIONS=166} [2024-06-04 15:41:46,401 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 99 predicate places. [2024-06-04 15:41:46,401 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 166 transitions, 1701 flow [2024-06-04 15:41:46,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-04 15:41:46,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:41:46,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:41:46,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-04 15:41:46,401 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:41:46,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:41:46,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1040619608, now seen corresponding path program 6 times [2024-06-04 15:41:46,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:41:46,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032300330] [2024-06-04 15:41:46,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:41:46,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:41:46,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:41:47,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:41:47,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:41:47,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032300330] [2024-06-04 15:41:47,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032300330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:41:47,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:41:47,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:41:47,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630997008] [2024-06-04 15:41:47,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:41:47,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:41:47,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:41:47,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:41:47,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:41:47,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:41:47,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 166 transitions, 1701 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-04 15:41:47,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:41:47,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:41:47,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:41:47,753 INFO L124 PetriNetUnfolderBase]: 1930/2878 cut-off events. [2024-06-04 15:41:47,753 INFO L125 PetriNetUnfolderBase]: For 76583/76604 co-relation queries the response was YES. [2024-06-04 15:41:47,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19422 conditions, 2878 events. 1930/2878 cut-off events. For 76583/76604 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 13140 event pairs, 507 based on Foata normal form. 11/2882 useless extension candidates. Maximal degree in co-relation 19355. Up to 2343 conditions per place. [2024-06-04 15:41:47,772 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 123 selfloop transitions, 74 changer transitions 0/200 dead transitions. [2024-06-04 15:41:47,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 200 transitions, 2421 flow [2024-06-04 15:41:47,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:41:47,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:41:47,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-04 15:41:47,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2024-06-04 15:41:47,774 INFO L175 Difference]: Start difference. First operand has 141 places, 166 transitions, 1701 flow. Second operand 8 states and 144 transitions. [2024-06-04 15:41:47,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 200 transitions, 2421 flow [2024-06-04 15:41:47,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 200 transitions, 2359 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-04 15:41:47,837 INFO L231 Difference]: Finished difference. Result has 143 places, 169 transitions, 1841 flow [2024-06-04 15:41:47,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1639, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1841, PETRI_PLACES=143, PETRI_TRANSITIONS=169} [2024-06-04 15:41:47,838 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 101 predicate places. [2024-06-04 15:41:47,838 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 169 transitions, 1841 flow [2024-06-04 15:41:47,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-04 15:41:47,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:41:47,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:41:47,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-04 15:41:47,838 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:41:47,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:41:47,839 INFO L85 PathProgramCache]: Analyzing trace with hash 2110295583, now seen corresponding path program 1 times [2024-06-04 15:41:47,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:41:47,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017350940] [2024-06-04 15:41:47,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:41:47,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:41:47,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:41:49,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:41:49,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:41:49,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017350940] [2024-06-04 15:41:49,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017350940] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:41:49,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:41:49,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:41:49,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395340747] [2024-06-04 15:41:49,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:41:49,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:41:49,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:41:49,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:41:49,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:41:49,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-04 15:41:49,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 169 transitions, 1841 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:49,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:41:49,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-04 15:41:49,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:41:49,794 INFO L124 PetriNetUnfolderBase]: 1987/2988 cut-off events. [2024-06-04 15:41:49,794 INFO L125 PetriNetUnfolderBase]: For 89980/90021 co-relation queries the response was YES. [2024-06-04 15:41:49,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21024 conditions, 2988 events. 1987/2988 cut-off events. For 89980/90021 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 13988 event pairs, 477 based on Foata normal form. 11/2939 useless extension candidates. Maximal degree in co-relation 20956. Up to 2700 conditions per place. [2024-06-04 15:41:49,816 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 153 selfloop transitions, 45 changer transitions 0/233 dead transitions. [2024-06-04 15:41:49,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 233 transitions, 2665 flow [2024-06-04 15:41:49,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:41:49,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:41:49,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-04 15:41:49,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4254742547425474 [2024-06-04 15:41:49,817 INFO L175 Difference]: Start difference. First operand has 143 places, 169 transitions, 1841 flow. Second operand 9 states and 157 transitions. [2024-06-04 15:41:49,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 233 transitions, 2665 flow [2024-06-04 15:41:49,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 233 transitions, 2509 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-04 15:41:49,892 INFO L231 Difference]: Finished difference. Result has 151 places, 196 transitions, 2140 flow [2024-06-04 15:41:49,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1699, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2140, PETRI_PLACES=151, PETRI_TRANSITIONS=196} [2024-06-04 15:41:49,892 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 109 predicate places. [2024-06-04 15:41:49,892 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 196 transitions, 2140 flow [2024-06-04 15:41:49,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:49,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:41:49,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:41:49,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-04 15:41:49,893 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:41:49,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:41:49,893 INFO L85 PathProgramCache]: Analyzing trace with hash -640642789, now seen corresponding path program 2 times [2024-06-04 15:41:49,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:41:49,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284360792] [2024-06-04 15:41:49,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:41:49,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:41:49,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:41:50,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:41:50,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:41:50,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284360792] [2024-06-04 15:41:50,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284360792] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:41:50,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:41:50,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:41:50,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458931297] [2024-06-04 15:41:50,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:41:50,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:41:50,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:41:50,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:41:50,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:41:50,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-04 15:41:50,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 196 transitions, 2140 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:50,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:41:50,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-04 15:41:50,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:41:51,683 INFO L124 PetriNetUnfolderBase]: 1996/3005 cut-off events. [2024-06-04 15:41:51,683 INFO L125 PetriNetUnfolderBase]: For 95919/95973 co-relation queries the response was YES. [2024-06-04 15:41:51,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21397 conditions, 3005 events. 1996/3005 cut-off events. For 95919/95973 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 14125 event pairs, 342 based on Foata normal form. 25/2968 useless extension candidates. Maximal degree in co-relation 21325. Up to 2651 conditions per place. [2024-06-04 15:41:51,705 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 145 selfloop transitions, 49 changer transitions 0/229 dead transitions. [2024-06-04 15:41:51,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 229 transitions, 2660 flow [2024-06-04 15:41:51,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:41:51,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:41:51,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-04 15:41:51,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42073170731707316 [2024-06-04 15:41:51,707 INFO L175 Difference]: Start difference. First operand has 151 places, 196 transitions, 2140 flow. Second operand 8 states and 138 transitions. [2024-06-04 15:41:51,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 229 transitions, 2660 flow [2024-06-04 15:41:51,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 229 transitions, 2591 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-04 15:41:51,779 INFO L231 Difference]: Finished difference. Result has 156 places, 198 transitions, 2217 flow [2024-06-04 15:41:51,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2071, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2217, PETRI_PLACES=156, PETRI_TRANSITIONS=198} [2024-06-04 15:41:51,780 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 114 predicate places. [2024-06-04 15:41:51,780 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 198 transitions, 2217 flow [2024-06-04 15:41:51,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:51,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:41:51,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:41:51,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-04 15:41:51,781 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:41:51,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:41:51,781 INFO L85 PathProgramCache]: Analyzing trace with hash -643321189, now seen corresponding path program 3 times [2024-06-04 15:41:51,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:41:51,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632093019] [2024-06-04 15:41:51,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:41:51,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:41:51,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:41:52,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:41:52,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:41:52,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632093019] [2024-06-04 15:41:52,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632093019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:41:52,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:41:52,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:41:52,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216190471] [2024-06-04 15:41:52,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:41:52,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:41:52,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:41:52,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:41:52,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:41:52,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-04 15:41:52,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 198 transitions, 2217 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:52,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:41:52,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-04 15:41:52,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:41:53,637 INFO L124 PetriNetUnfolderBase]: 2006/3027 cut-off events. [2024-06-04 15:41:53,637 INFO L125 PetriNetUnfolderBase]: For 103196/103257 co-relation queries the response was YES. [2024-06-04 15:41:53,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21903 conditions, 3027 events. 2006/3027 cut-off events. For 103196/103257 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 14290 event pairs, 454 based on Foata normal form. 16/2984 useless extension candidates. Maximal degree in co-relation 21830. Up to 2695 conditions per place. [2024-06-04 15:41:53,660 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 143 selfloop transitions, 53 changer transitions 0/231 dead transitions. [2024-06-04 15:41:53,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 231 transitions, 2747 flow [2024-06-04 15:41:53,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:41:53,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:41:53,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-04 15:41:53,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42378048780487804 [2024-06-04 15:41:53,663 INFO L175 Difference]: Start difference. First operand has 156 places, 198 transitions, 2217 flow. Second operand 8 states and 139 transitions. [2024-06-04 15:41:53,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 231 transitions, 2747 flow [2024-06-04 15:41:53,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 231 transitions, 2617 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-04 15:41:53,755 INFO L231 Difference]: Finished difference. Result has 158 places, 200 transitions, 2245 flow [2024-06-04 15:41:53,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2091, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2245, PETRI_PLACES=158, PETRI_TRANSITIONS=200} [2024-06-04 15:41:53,756 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 116 predicate places. [2024-06-04 15:41:53,756 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 200 transitions, 2245 flow [2024-06-04 15:41:53,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:53,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:41:53,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:41:53,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-04 15:41:53,757 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:41:53,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:41:53,757 INFO L85 PathProgramCache]: Analyzing trace with hash -643321065, now seen corresponding path program 1 times [2024-06-04 15:41:53,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:41:53,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556145237] [2024-06-04 15:41:53,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:41:53,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:41:53,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:41:54,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:41:54,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:41:54,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556145237] [2024-06-04 15:41:54,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556145237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:41:54,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:41:54,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:41:54,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176026566] [2024-06-04 15:41:54,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:41:54,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:41:54,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:41:54,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:41:54,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:41:54,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:41:54,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 200 transitions, 2245 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:54,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:41:54,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:41:54,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:41:55,442 INFO L124 PetriNetUnfolderBase]: 2108/3152 cut-off events. [2024-06-04 15:41:55,442 INFO L125 PetriNetUnfolderBase]: For 96405/96409 co-relation queries the response was YES. [2024-06-04 15:41:55,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22194 conditions, 3152 events. 2108/3152 cut-off events. For 96405/96409 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 14631 event pairs, 495 based on Foata normal form. 6/3155 useless extension candidates. Maximal degree in co-relation 22120. Up to 2966 conditions per place. [2024-06-04 15:41:55,463 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 195 selfloop transitions, 33 changer transitions 0/231 dead transitions. [2024-06-04 15:41:55,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 231 transitions, 2803 flow [2024-06-04 15:41:55,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:41:55,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:41:55,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-04 15:41:55,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4054878048780488 [2024-06-04 15:41:55,464 INFO L175 Difference]: Start difference. First operand has 158 places, 200 transitions, 2245 flow. Second operand 8 states and 133 transitions. [2024-06-04 15:41:55,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 231 transitions, 2803 flow [2024-06-04 15:41:55,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 231 transitions, 2661 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-04 15:41:55,555 INFO L231 Difference]: Finished difference. Result has 160 places, 200 transitions, 2181 flow [2024-06-04 15:41:55,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2103, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2181, PETRI_PLACES=160, PETRI_TRANSITIONS=200} [2024-06-04 15:41:55,556 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 118 predicate places. [2024-06-04 15:41:55,556 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 200 transitions, 2181 flow [2024-06-04 15:41:55,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:55,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:41:55,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:41:55,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-04 15:41:55,557 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:41:55,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:41:55,557 INFO L85 PathProgramCache]: Analyzing trace with hash -525048811, now seen corresponding path program 1 times [2024-06-04 15:41:55,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:41:55,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848231076] [2024-06-04 15:41:55,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:41:55,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:41:55,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:41:56,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:41:56,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:41:56,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848231076] [2024-06-04 15:41:56,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848231076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:41:56,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:41:56,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:41:56,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525843540] [2024-06-04 15:41:56,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:41:56,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:41:56,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:41:56,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:41:56,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:41:56,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:41:56,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 200 transitions, 2181 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:56,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:41:56,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:41:56,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:41:57,264 INFO L124 PetriNetUnfolderBase]: 2200/3306 cut-off events. [2024-06-04 15:41:57,265 INFO L125 PetriNetUnfolderBase]: For 111728/111730 co-relation queries the response was YES. [2024-06-04 15:41:57,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22952 conditions, 3306 events. 2200/3306 cut-off events. For 111728/111730 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 15638 event pairs, 508 based on Foata normal form. 26/3329 useless extension candidates. Maximal degree in co-relation 22877. Up to 2841 conditions per place. [2024-06-04 15:41:57,291 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 184 selfloop transitions, 52 changer transitions 0/239 dead transitions. [2024-06-04 15:41:57,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 239 transitions, 2819 flow [2024-06-04 15:41:57,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:41:57,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:41:57,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-04 15:41:57,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2024-06-04 15:41:57,293 INFO L175 Difference]: Start difference. First operand has 160 places, 200 transitions, 2181 flow. Second operand 9 states and 153 transitions. [2024-06-04 15:41:57,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 239 transitions, 2819 flow [2024-06-04 15:41:57,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 239 transitions, 2725 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-04 15:41:57,379 INFO L231 Difference]: Finished difference. Result has 163 places, 202 transitions, 2234 flow [2024-06-04 15:41:57,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2087, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2234, PETRI_PLACES=163, PETRI_TRANSITIONS=202} [2024-06-04 15:41:57,379 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 121 predicate places. [2024-06-04 15:41:57,379 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 202 transitions, 2234 flow [2024-06-04 15:41:57,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:57,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:41:57,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:41:57,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-04 15:41:57,380 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:41:57,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:41:57,380 INFO L85 PathProgramCache]: Analyzing trace with hash -525233509, now seen corresponding path program 4 times [2024-06-04 15:41:57,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:41:57,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471826545] [2024-06-04 15:41:57,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:41:57,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:41:57,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:41:58,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:41:58,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:41:58,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471826545] [2024-06-04 15:41:58,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471826545] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:41:58,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:41:58,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:41:58,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588119768] [2024-06-04 15:41:58,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:41:58,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:41:58,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:41:58,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:41:58,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:41:58,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-04 15:41:58,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 202 transitions, 2234 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:58,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:41:58,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-04 15:41:58,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:41:59,345 INFO L124 PetriNetUnfolderBase]: 2102/3193 cut-off events. [2024-06-04 15:41:59,345 INFO L125 PetriNetUnfolderBase]: For 117392/117456 co-relation queries the response was YES. [2024-06-04 15:41:59,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23015 conditions, 3193 events. 2102/3193 cut-off events. For 117392/117456 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 15401 event pairs, 473 based on Foata normal form. 15/3141 useless extension candidates. Maximal degree in co-relation 22939. Up to 2813 conditions per place. [2024-06-04 15:41:59,372 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 137 selfloop transitions, 59 changer transitions 0/232 dead transitions. [2024-06-04 15:41:59,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 232 transitions, 2750 flow [2024-06-04 15:41:59,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:41:59,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:41:59,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-04 15:41:59,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42378048780487804 [2024-06-04 15:41:59,374 INFO L175 Difference]: Start difference. First operand has 163 places, 202 transitions, 2234 flow. Second operand 8 states and 139 transitions. [2024-06-04 15:41:59,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 232 transitions, 2750 flow [2024-06-04 15:41:59,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 232 transitions, 2637 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-04 15:41:59,519 INFO L231 Difference]: Finished difference. Result has 164 places, 204 transitions, 2289 flow [2024-06-04 15:41:59,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2121, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2289, PETRI_PLACES=164, PETRI_TRANSITIONS=204} [2024-06-04 15:41:59,520 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 122 predicate places. [2024-06-04 15:41:59,520 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 204 transitions, 2289 flow [2024-06-04 15:41:59,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:59,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:41:59,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:41:59,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-04 15:41:59,521 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:41:59,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:41:59,521 INFO L85 PathProgramCache]: Analyzing trace with hash 664716577, now seen corresponding path program 2 times [2024-06-04 15:41:59,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:41:59,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541589870] [2024-06-04 15:41:59,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:41:59,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:41:59,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:42:00,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:42:00,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:42:00,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541589870] [2024-06-04 15:42:00,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541589870] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:42:00,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:42:00,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:42:00,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663638670] [2024-06-04 15:42:00,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:42:00,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:42:00,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:42:00,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:42:00,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:42:00,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:42:00,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 204 transitions, 2289 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:00,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:42:00,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:42:00,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:42:01,559 INFO L124 PetriNetUnfolderBase]: 2242/3372 cut-off events. [2024-06-04 15:42:01,559 INFO L125 PetriNetUnfolderBase]: For 118569/118599 co-relation queries the response was YES. [2024-06-04 15:42:01,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24082 conditions, 3372 events. 2242/3372 cut-off events. For 118569/118599 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 16080 event pairs, 534 based on Foata normal form. 24/3389 useless extension candidates. Maximal degree in co-relation 24005. Up to 3204 conditions per place. [2024-06-04 15:42:01,588 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 194 selfloop transitions, 43 changer transitions 0/240 dead transitions. [2024-06-04 15:42:01,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 240 transitions, 2905 flow [2024-06-04 15:42:01,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:42:01,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:42:01,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-06-04 15:42:01,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3804878048780488 [2024-06-04 15:42:01,590 INFO L175 Difference]: Start difference. First operand has 164 places, 204 transitions, 2289 flow. Second operand 10 states and 156 transitions. [2024-06-04 15:42:01,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 240 transitions, 2905 flow [2024-06-04 15:42:01,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 240 transitions, 2757 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-04 15:42:01,698 INFO L231 Difference]: Finished difference. Result has 168 places, 206 transitions, 2272 flow [2024-06-04 15:42:01,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2141, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2272, PETRI_PLACES=168, PETRI_TRANSITIONS=206} [2024-06-04 15:42:01,698 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 126 predicate places. [2024-06-04 15:42:01,698 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 206 transitions, 2272 flow [2024-06-04 15:42:01,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:01,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:42:01,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:42:01,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-04 15:42:01,699 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:42:01,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:42:01,699 INFO L85 PathProgramCache]: Analyzing trace with hash 665013247, now seen corresponding path program 3 times [2024-06-04 15:42:01,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:42:01,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343184292] [2024-06-04 15:42:01,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:42:01,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:42:01,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:42:02,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:42:02,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:42:02,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343184292] [2024-06-04 15:42:02,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343184292] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:42:02,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:42:02,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:42:02,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584879092] [2024-06-04 15:42:02,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:42:02,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:42:02,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:42:02,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:42:02,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:42:02,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:42:02,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 206 transitions, 2272 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:02,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:42:02,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:42:02,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:42:03,554 INFO L124 PetriNetUnfolderBase]: 2259/3399 cut-off events. [2024-06-04 15:42:03,554 INFO L125 PetriNetUnfolderBase]: For 124855/124885 co-relation queries the response was YES. [2024-06-04 15:42:03,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24474 conditions, 3399 events. 2259/3399 cut-off events. For 124855/124885 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 16255 event pairs, 490 based on Foata normal form. 24/3416 useless extension candidates. Maximal degree in co-relation 24396. Up to 3148 conditions per place. [2024-06-04 15:42:03,587 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 192 selfloop transitions, 49 changer transitions 0/244 dead transitions. [2024-06-04 15:42:03,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 244 transitions, 3072 flow [2024-06-04 15:42:03,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:42:03,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:42:03,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 145 transitions. [2024-06-04 15:42:03,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39295392953929537 [2024-06-04 15:42:03,589 INFO L175 Difference]: Start difference. First operand has 168 places, 206 transitions, 2272 flow. Second operand 9 states and 145 transitions. [2024-06-04 15:42:03,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 244 transitions, 3072 flow [2024-06-04 15:42:03,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 244 transitions, 2959 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-04 15:42:03,702 INFO L231 Difference]: Finished difference. Result has 170 places, 211 transitions, 2370 flow [2024-06-04 15:42:03,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2159, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2370, PETRI_PLACES=170, PETRI_TRANSITIONS=211} [2024-06-04 15:42:03,703 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 128 predicate places. [2024-06-04 15:42:03,703 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 211 transitions, 2370 flow [2024-06-04 15:42:03,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:03,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:42:03,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:42:03,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-04 15:42:03,704 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:42:03,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:42:03,704 INFO L85 PathProgramCache]: Analyzing trace with hash -410857977, now seen corresponding path program 4 times [2024-06-04 15:42:03,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:42:03,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038797640] [2024-06-04 15:42:03,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:42:03,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:42:03,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:42:04,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:42:04,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:42:04,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038797640] [2024-06-04 15:42:04,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038797640] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:42:04,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:42:04,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:42:04,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729051717] [2024-06-04 15:42:04,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:42:04,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:42:04,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:42:04,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:42:04,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:42:04,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:42:04,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 211 transitions, 2370 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:04,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:42:04,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:42:04,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:42:05,555 INFO L124 PetriNetUnfolderBase]: 2316/3501 cut-off events. [2024-06-04 15:42:05,555 INFO L125 PetriNetUnfolderBase]: For 141660/141684 co-relation queries the response was YES. [2024-06-04 15:42:05,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25045 conditions, 3501 events. 2316/3501 cut-off events. For 141660/141684 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 16972 event pairs, 533 based on Foata normal form. 37/3524 useless extension candidates. Maximal degree in co-relation 24965. Up to 2926 conditions per place. [2024-06-04 15:42:05,585 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 178 selfloop transitions, 71 changer transitions 0/252 dead transitions. [2024-06-04 15:42:05,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 252 transitions, 3048 flow [2024-06-04 15:42:05,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:42:05,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:42:05,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-04 15:42:05,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4281842818428184 [2024-06-04 15:42:05,586 INFO L175 Difference]: Start difference. First operand has 170 places, 211 transitions, 2370 flow. Second operand 9 states and 158 transitions. [2024-06-04 15:42:05,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 252 transitions, 3048 flow [2024-06-04 15:42:05,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 252 transitions, 2906 flow, removed 46 selfloop flow, removed 5 redundant places. [2024-06-04 15:42:05,716 INFO L231 Difference]: Finished difference. Result has 177 places, 216 transitions, 2471 flow [2024-06-04 15:42:05,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2228, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2471, PETRI_PLACES=177, PETRI_TRANSITIONS=216} [2024-06-04 15:42:05,717 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 135 predicate places. [2024-06-04 15:42:05,717 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 216 transitions, 2471 flow [2024-06-04 15:42:05,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:05,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:42:05,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:42:05,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-04 15:42:05,717 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:42:05,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:42:05,718 INFO L85 PathProgramCache]: Analyzing trace with hash 656435609, now seen corresponding path program 1 times [2024-06-04 15:42:05,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:42:05,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970438201] [2024-06-04 15:42:05,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:42:05,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:42:05,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:42:06,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:42:06,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:42:06,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970438201] [2024-06-04 15:42:06,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970438201] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:42:06,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:42:06,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:42:06,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399559919] [2024-06-04 15:42:06,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:42:06,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:42:06,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:42:06,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:42:06,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:42:06,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:42:06,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 216 transitions, 2471 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:06,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:42:06,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:42:06,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:42:07,505 INFO L124 PetriNetUnfolderBase]: 2306/3487 cut-off events. [2024-06-04 15:42:07,505 INFO L125 PetriNetUnfolderBase]: For 140690/140714 co-relation queries the response was YES. [2024-06-04 15:42:07,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25482 conditions, 3487 events. 2306/3487 cut-off events. For 140690/140714 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 16886 event pairs, 509 based on Foata normal form. 13/3486 useless extension candidates. Maximal degree in co-relation 25397. Up to 2893 conditions per place. [2024-06-04 15:42:07,537 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 159 selfloop transitions, 85 changer transitions 0/247 dead transitions. [2024-06-04 15:42:07,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 247 transitions, 3057 flow [2024-06-04 15:42:07,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:42:07,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:42:07,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-04 15:42:07,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41192411924119243 [2024-06-04 15:42:07,539 INFO L175 Difference]: Start difference. First operand has 177 places, 216 transitions, 2471 flow. Second operand 9 states and 152 transitions. [2024-06-04 15:42:07,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 247 transitions, 3057 flow [2024-06-04 15:42:07,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 247 transitions, 2846 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-04 15:42:07,681 INFO L231 Difference]: Finished difference. Result has 178 places, 216 transitions, 2438 flow [2024-06-04 15:42:07,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2260, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2438, PETRI_PLACES=178, PETRI_TRANSITIONS=216} [2024-06-04 15:42:07,682 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 136 predicate places. [2024-06-04 15:42:07,682 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 216 transitions, 2438 flow [2024-06-04 15:42:07,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:07,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:42:07,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:42:07,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-04 15:42:07,683 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:42:07,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:42:07,683 INFO L85 PathProgramCache]: Analyzing trace with hash -2100534629, now seen corresponding path program 5 times [2024-06-04 15:42:07,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:42:07,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994950663] [2024-06-04 15:42:07,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:42:07,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:42:07,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:42:08,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:42:08,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:42:08,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994950663] [2024-06-04 15:42:08,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994950663] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:42:08,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:42:08,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:42:08,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117656483] [2024-06-04 15:42:08,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:42:08,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:42:08,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:42:08,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:42:08,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:42:08,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-04 15:42:08,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 216 transitions, 2438 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:08,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:42:08,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-04 15:42:08,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:42:09,596 INFO L124 PetriNetUnfolderBase]: 2164/3310 cut-off events. [2024-06-04 15:42:09,596 INFO L125 PetriNetUnfolderBase]: For 144141/144231 co-relation queries the response was YES. [2024-06-04 15:42:09,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24269 conditions, 3310 events. 2164/3310 cut-off events. For 144141/144231 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 16265 event pairs, 482 based on Foata normal form. 20/3252 useless extension candidates. Maximal degree in co-relation 24184. Up to 2875 conditions per place. [2024-06-04 15:42:09,627 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 131 selfloop transitions, 70 changer transitions 0/244 dead transitions. [2024-06-04 15:42:09,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 244 transitions, 2962 flow [2024-06-04 15:42:09,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:42:09,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:42:09,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-04 15:42:09,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42073170731707316 [2024-06-04 15:42:09,628 INFO L175 Difference]: Start difference. First operand has 178 places, 216 transitions, 2438 flow. Second operand 8 states and 138 transitions. [2024-06-04 15:42:09,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 244 transitions, 2962 flow [2024-06-04 15:42:09,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 244 transitions, 2779 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-04 15:42:09,763 INFO L231 Difference]: Finished difference. Result has 178 places, 218 transitions, 2449 flow [2024-06-04 15:42:09,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2255, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2449, PETRI_PLACES=178, PETRI_TRANSITIONS=218} [2024-06-04 15:42:09,764 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 136 predicate places. [2024-06-04 15:42:09,764 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 218 transitions, 2449 flow [2024-06-04 15:42:09,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:09,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:42:09,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:42:09,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-04 15:42:09,765 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:42:09,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:42:09,766 INFO L85 PathProgramCache]: Analyzing trace with hash 590052989, now seen corresponding path program 1 times [2024-06-04 15:42:09,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:42:09,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323942781] [2024-06-04 15:42:09,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:42:09,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:42:09,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:42:10,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:42:10,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:42:10,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323942781] [2024-06-04 15:42:10,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323942781] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:42:10,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:42:10,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:42:10,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516525325] [2024-06-04 15:42:10,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:42:10,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:42:10,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:42:10,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:42:10,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:42:10,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:42:10,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 218 transitions, 2449 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:10,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:42:10,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:42:10,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:42:11,796 INFO L124 PetriNetUnfolderBase]: 2310/3490 cut-off events. [2024-06-04 15:42:11,796 INFO L125 PetriNetUnfolderBase]: For 142168/142172 co-relation queries the response was YES. [2024-06-04 15:42:11,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25335 conditions, 3490 events. 2310/3490 cut-off events. For 142168/142172 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 16836 event pairs, 360 based on Foata normal form. 8/3495 useless extension candidates. Maximal degree in co-relation 25249. Up to 3246 conditions per place. [2024-06-04 15:42:11,824 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 230 selfloop transitions, 29 changer transitions 0/262 dead transitions. [2024-06-04 15:42:11,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 262 transitions, 3193 flow [2024-06-04 15:42:11,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:42:11,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:42:11,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 145 transitions. [2024-06-04 15:42:11,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39295392953929537 [2024-06-04 15:42:11,825 INFO L175 Difference]: Start difference. First operand has 178 places, 218 transitions, 2449 flow. Second operand 9 states and 145 transitions. [2024-06-04 15:42:11,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 262 transitions, 3193 flow [2024-06-04 15:42:11,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 262 transitions, 3019 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-04 15:42:11,954 INFO L231 Difference]: Finished difference. Result has 183 places, 226 transitions, 2478 flow [2024-06-04 15:42:11,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2275, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2478, PETRI_PLACES=183, PETRI_TRANSITIONS=226} [2024-06-04 15:42:11,954 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 141 predicate places. [2024-06-04 15:42:11,954 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 226 transitions, 2478 flow [2024-06-04 15:42:11,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:11,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:42:11,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:42:11,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-04 15:42:11,955 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:42:11,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:42:11,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1996559801, now seen corresponding path program 2 times [2024-06-04 15:42:11,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:42:11,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547903469] [2024-06-04 15:42:11,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:42:11,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:42:11,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:42:13,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:42:13,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:42:13,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547903469] [2024-06-04 15:42:13,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547903469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:42:13,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:42:13,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:42:13,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852570345] [2024-06-04 15:42:13,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:42:13,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:42:13,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:42:13,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:42:13,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:42:13,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:42:13,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 226 transitions, 2478 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:13,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:42:13,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:42:13,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:42:13,910 INFO L124 PetriNetUnfolderBase]: 2327/3517 cut-off events. [2024-06-04 15:42:13,910 INFO L125 PetriNetUnfolderBase]: For 149288/149292 co-relation queries the response was YES. [2024-06-04 15:42:13,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25718 conditions, 3517 events. 2327/3517 cut-off events. For 149288/149292 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 17080 event pairs, 486 based on Foata normal form. 8/3522 useless extension candidates. Maximal degree in co-relation 25629. Up to 3308 conditions per place. [2024-06-04 15:42:13,942 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 226 selfloop transitions, 35 changer transitions 0/264 dead transitions. [2024-06-04 15:42:13,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 264 transitions, 3160 flow [2024-06-04 15:42:13,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:42:13,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:42:13,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-04 15:42:13,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3983739837398374 [2024-06-04 15:42:13,943 INFO L175 Difference]: Start difference. First operand has 183 places, 226 transitions, 2478 flow. Second operand 9 states and 147 transitions. [2024-06-04 15:42:13,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 264 transitions, 3160 flow [2024-06-04 15:42:14,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 264 transitions, 3059 flow, removed 38 selfloop flow, removed 4 redundant places. [2024-06-04 15:42:14,138 INFO L231 Difference]: Finished difference. Result has 188 places, 228 transitions, 2503 flow [2024-06-04 15:42:14,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2377, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2503, PETRI_PLACES=188, PETRI_TRANSITIONS=228} [2024-06-04 15:42:14,138 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 146 predicate places. [2024-06-04 15:42:14,139 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 228 transitions, 2503 flow [2024-06-04 15:42:14,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:14,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:42:14,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:42:14,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-04 15:42:14,139 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:42:14,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:42:14,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1703059289, now seen corresponding path program 3 times [2024-06-04 15:42:14,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:42:14,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229078549] [2024-06-04 15:42:14,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:42:14,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:42:14,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:42:15,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:42:15,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:42:15,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229078549] [2024-06-04 15:42:15,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229078549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:42:15,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:42:15,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:42:15,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953119892] [2024-06-04 15:42:15,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:42:15,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:42:15,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:42:15,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:42:15,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:42:15,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:42:15,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 228 transitions, 2503 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:15,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:42:15,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:42:15,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:42:16,164 INFO L124 PetriNetUnfolderBase]: 2344/3544 cut-off events. [2024-06-04 15:42:16,164 INFO L125 PetriNetUnfolderBase]: For 158154/158158 co-relation queries the response was YES. [2024-06-04 15:42:16,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26162 conditions, 3544 events. 2344/3544 cut-off events. For 158154/158158 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 17247 event pairs, 484 based on Foata normal form. 8/3549 useless extension candidates. Maximal degree in co-relation 26071. Up to 3289 conditions per place. [2024-06-04 15:42:16,197 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 228 selfloop transitions, 37 changer transitions 0/268 dead transitions. [2024-06-04 15:42:16,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 268 transitions, 3225 flow [2024-06-04 15:42:16,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:42:16,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:42:16,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-04 15:42:16,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010840108401084 [2024-06-04 15:42:16,198 INFO L175 Difference]: Start difference. First operand has 188 places, 228 transitions, 2503 flow. Second operand 9 states and 148 transitions. [2024-06-04 15:42:16,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 268 transitions, 3225 flow [2024-06-04 15:42:16,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 268 transitions, 3119 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-04 15:42:16,358 INFO L231 Difference]: Finished difference. Result has 191 places, 232 transitions, 2570 flow [2024-06-04 15:42:16,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2397, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2570, PETRI_PLACES=191, PETRI_TRANSITIONS=232} [2024-06-04 15:42:16,358 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 149 predicate places. [2024-06-04 15:42:16,359 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 232 transitions, 2570 flow [2024-06-04 15:42:16,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:16,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:42:16,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:42:16,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-04 15:42:16,359 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:42:16,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:42:16,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1074528085, now seen corresponding path program 1 times [2024-06-04 15:42:16,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:42:16,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724401880] [2024-06-04 15:42:16,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:42:16,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:42:16,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:42:17,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:42:17,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:42:17,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724401880] [2024-06-04 15:42:17,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724401880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:42:17,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:42:17,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:42:17,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691750113] [2024-06-04 15:42:17,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:42:17,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:42:17,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:42:17,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:42:17,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:42:17,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:42:17,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 232 transitions, 2570 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:17,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:42:17,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:42:17,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:42:18,039 INFO L124 PetriNetUnfolderBase]: 2436/3698 cut-off events. [2024-06-04 15:42:18,039 INFO L125 PetriNetUnfolderBase]: For 183914/183916 co-relation queries the response was YES. [2024-06-04 15:42:18,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27330 conditions, 3698 events. 2436/3698 cut-off events. For 183914/183916 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 18311 event pairs, 497 based on Foata normal form. 26/3721 useless extension candidates. Maximal degree in co-relation 27237. Up to 3215 conditions per place. [2024-06-04 15:42:18,075 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 216 selfloop transitions, 52 changer transitions 0/271 dead transitions. [2024-06-04 15:42:18,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 271 transitions, 3294 flow [2024-06-04 15:42:18,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:42:18,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:42:18,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-04 15:42:18,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4173441734417344 [2024-06-04 15:42:18,077 INFO L175 Difference]: Start difference. First operand has 191 places, 232 transitions, 2570 flow. Second operand 9 states and 154 transitions. [2024-06-04 15:42:18,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 271 transitions, 3294 flow [2024-06-04 15:42:18,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 271 transitions, 3187 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-06-04 15:42:18,246 INFO L231 Difference]: Finished difference. Result has 195 places, 234 transitions, 2632 flow [2024-06-04 15:42:18,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2463, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2632, PETRI_PLACES=195, PETRI_TRANSITIONS=234} [2024-06-04 15:42:18,246 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 153 predicate places. [2024-06-04 15:42:18,247 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 234 transitions, 2632 flow [2024-06-04 15:42:18,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:18,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:42:18,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:42:18,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-04 15:42:18,247 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:42:18,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:42:18,247 INFO L85 PathProgramCache]: Analyzing trace with hash 903356677, now seen corresponding path program 2 times [2024-06-04 15:42:18,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:42:18,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285786460] [2024-06-04 15:42:18,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:42:18,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:42:18,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:42:19,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:42:19,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:42:19,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285786460] [2024-06-04 15:42:19,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285786460] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:42:19,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:42:19,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:42:19,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100778551] [2024-06-04 15:42:19,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:42:19,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:42:19,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:42:19,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:42:19,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:42:19,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:42:19,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 234 transitions, 2632 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:19,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:42:19,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:42:19,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:42:19,941 INFO L124 PetriNetUnfolderBase]: 2580/3938 cut-off events. [2024-06-04 15:42:19,941 INFO L125 PetriNetUnfolderBase]: For 203202/203204 co-relation queries the response was YES. [2024-06-04 15:42:19,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29788 conditions, 3938 events. 2580/3938 cut-off events. For 203202/203204 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 19998 event pairs, 527 based on Foata normal form. 18/3953 useless extension candidates. Maximal degree in co-relation 29693. Up to 3059 conditions per place. [2024-06-04 15:42:19,979 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 222 selfloop transitions, 54 changer transitions 0/279 dead transitions. [2024-06-04 15:42:19,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 279 transitions, 3590 flow [2024-06-04 15:42:19,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:42:19,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:42:19,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-04 15:42:19,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4254742547425474 [2024-06-04 15:42:19,981 INFO L175 Difference]: Start difference. First operand has 195 places, 234 transitions, 2632 flow. Second operand 9 states and 157 transitions. [2024-06-04 15:42:19,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 279 transitions, 3590 flow [2024-06-04 15:42:20,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 279 transitions, 3453 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-04 15:42:20,295 INFO L231 Difference]: Finished difference. Result has 197 places, 236 transitions, 2671 flow [2024-06-04 15:42:20,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2495, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2671, PETRI_PLACES=197, PETRI_TRANSITIONS=236} [2024-06-04 15:42:20,295 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 155 predicate places. [2024-06-04 15:42:20,296 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 236 transitions, 2671 flow [2024-06-04 15:42:20,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:20,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:42:20,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:42:20,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-04 15:42:20,296 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:42:20,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:42:20,297 INFO L85 PathProgramCache]: Analyzing trace with hash 897634945, now seen corresponding path program 4 times [2024-06-04 15:42:20,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:42:20,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314440937] [2024-06-04 15:42:20,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:42:20,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:42:20,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:42:21,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:42:21,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:42:21,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314440937] [2024-06-04 15:42:21,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314440937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:42:21,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:42:21,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:42:21,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29668930] [2024-06-04 15:42:21,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:42:21,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:42:21,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:42:21,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:42:21,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:42:21,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:42:21,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 236 transitions, 2671 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:21,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:42:21,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:42:21,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:42:22,343 INFO L124 PetriNetUnfolderBase]: 2572/3926 cut-off events. [2024-06-04 15:42:22,343 INFO L125 PetriNetUnfolderBase]: For 196972/196974 co-relation queries the response was YES. [2024-06-04 15:42:22,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29540 conditions, 3926 events. 2572/3926 cut-off events. For 196972/196974 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 19964 event pairs, 556 based on Foata normal form. 6/3929 useless extension candidates. Maximal degree in co-relation 29444. Up to 3563 conditions per place. [2024-06-04 15:42:22,381 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 217 selfloop transitions, 51 changer transitions 0/271 dead transitions. [2024-06-04 15:42:22,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 271 transitions, 3367 flow [2024-06-04 15:42:22,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:42:22,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:42:22,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-04 15:42:22,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4092140921409214 [2024-06-04 15:42:22,382 INFO L175 Difference]: Start difference. First operand has 197 places, 236 transitions, 2671 flow. Second operand 9 states and 151 transitions. [2024-06-04 15:42:22,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 271 transitions, 3367 flow [2024-06-04 15:42:22,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 271 transitions, 3278 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-04 15:42:22,595 INFO L231 Difference]: Finished difference. Result has 201 places, 238 transitions, 2753 flow [2024-06-04 15:42:22,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2584, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2753, PETRI_PLACES=201, PETRI_TRANSITIONS=238} [2024-06-04 15:42:22,596 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 159 predicate places. [2024-06-04 15:42:22,596 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 238 transitions, 2753 flow [2024-06-04 15:42:22,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:22,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:42:22,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:42:22,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-04 15:42:22,596 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:42:22,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:42:22,596 INFO L85 PathProgramCache]: Analyzing trace with hash 897631225, now seen corresponding path program 5 times [2024-06-04 15:42:22,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:42:22,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373795813] [2024-06-04 15:42:22,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:42:22,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:42:22,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:42:23,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:42:23,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:42:23,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373795813] [2024-06-04 15:42:23,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373795813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:42:23,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:42:23,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:42:23,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326170213] [2024-06-04 15:42:23,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:42:23,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:42:23,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:42:23,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:42:23,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:42:23,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:42:23,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 238 transitions, 2753 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:23,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:42:23,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:42:23,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:42:24,602 INFO L124 PetriNetUnfolderBase]: 2589/3953 cut-off events. [2024-06-04 15:42:24,602 INFO L125 PetriNetUnfolderBase]: For 206037/206039 co-relation queries the response was YES. [2024-06-04 15:42:24,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30095 conditions, 3953 events. 2589/3953 cut-off events. For 206037/206039 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 20132 event pairs, 554 based on Foata normal form. 6/3956 useless extension candidates. Maximal degree in co-relation 29997. Up to 3411 conditions per place. [2024-06-04 15:42:24,642 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 220 selfloop transitions, 56 changer transitions 0/279 dead transitions. [2024-06-04 15:42:24,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 279 transitions, 3535 flow [2024-06-04 15:42:24,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:42:24,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:42:24,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-04 15:42:24,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42005420054200543 [2024-06-04 15:42:24,643 INFO L175 Difference]: Start difference. First operand has 201 places, 238 transitions, 2753 flow. Second operand 9 states and 155 transitions. [2024-06-04 15:42:24,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 279 transitions, 3535 flow [2024-06-04 15:42:24,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 279 transitions, 3386 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-04 15:42:24,888 INFO L231 Difference]: Finished difference. Result has 204 places, 242 transitions, 2836 flow [2024-06-04 15:42:24,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2604, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2836, PETRI_PLACES=204, PETRI_TRANSITIONS=242} [2024-06-04 15:42:24,888 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 162 predicate places. [2024-06-04 15:42:24,888 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 242 transitions, 2836 flow [2024-06-04 15:42:24,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:24,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:42:24,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:42:24,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-04 15:42:24,889 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:42:24,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:42:24,889 INFO L85 PathProgramCache]: Analyzing trace with hash -940125740, now seen corresponding path program 1 times [2024-06-04 15:42:24,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:42:24,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42151076] [2024-06-04 15:42:24,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:42:24,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:42:24,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:42:25,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:42:25,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:42:25,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42151076] [2024-06-04 15:42:25,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42151076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:42:25,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:42:25,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:42:25,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507597247] [2024-06-04 15:42:25,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:42:25,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:42:25,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:42:25,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:42:25,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:42:25,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:42:25,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 242 transitions, 2836 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:25,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:42:25,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:42:25,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:42:26,634 INFO L124 PetriNetUnfolderBase]: 2604/3972 cut-off events. [2024-06-04 15:42:26,634 INFO L125 PetriNetUnfolderBase]: For 213320/213324 co-relation queries the response was YES. [2024-06-04 15:42:26,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30539 conditions, 3972 events. 2604/3972 cut-off events. For 213320/213324 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 20246 event pairs, 571 based on Foata normal form. 6/3975 useless extension candidates. Maximal degree in co-relation 30439. Up to 3894 conditions per place. [2024-06-04 15:42:26,672 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 238 selfloop transitions, 30 changer transitions 0/271 dead transitions. [2024-06-04 15:42:26,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 271 transitions, 3636 flow [2024-06-04 15:42:26,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:42:26,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:42:26,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 114 transitions. [2024-06-04 15:42:26,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.397212543554007 [2024-06-04 15:42:26,677 INFO L175 Difference]: Start difference. First operand has 204 places, 242 transitions, 2836 flow. Second operand 7 states and 114 transitions. [2024-06-04 15:42:26,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 271 transitions, 3636 flow [2024-06-04 15:42:26,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 271 transitions, 3497 flow, removed 38 selfloop flow, removed 5 redundant places. [2024-06-04 15:42:26,937 INFO L231 Difference]: Finished difference. Result has 207 places, 251 transitions, 2891 flow [2024-06-04 15:42:26,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2697, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2891, PETRI_PLACES=207, PETRI_TRANSITIONS=251} [2024-06-04 15:42:26,937 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 165 predicate places. [2024-06-04 15:42:26,937 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 251 transitions, 2891 flow [2024-06-04 15:42:26,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:26,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:42:26,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:42:26,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-04 15:42:26,938 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:42:26,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:42:26,939 INFO L85 PathProgramCache]: Analyzing trace with hash -868621959, now seen corresponding path program 3 times [2024-06-04 15:42:26,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:42:26,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575279572] [2024-06-04 15:42:26,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:42:26,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:42:26,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:42:27,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:42:27,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:42:27,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575279572] [2024-06-04 15:42:27,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575279572] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:42:27,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:42:27,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:42:27,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778946807] [2024-06-04 15:42:27,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:42:27,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:42:27,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:42:27,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:42:27,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:42:27,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:42:27,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 251 transitions, 2891 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:27,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:42:27,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:42:27,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:42:28,816 INFO L124 PetriNetUnfolderBase]: 2798/4295 cut-off events. [2024-06-04 15:42:28,817 INFO L125 PetriNetUnfolderBase]: For 261902/261929 co-relation queries the response was YES. [2024-06-04 15:42:28,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33793 conditions, 4295 events. 2798/4295 cut-off events. For 261902/261929 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 22479 event pairs, 578 based on Foata normal form. 26/4307 useless extension candidates. Maximal degree in co-relation 33690. Up to 3372 conditions per place. [2024-06-04 15:42:28,853 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 206 selfloop transitions, 86 changer transitions 0/295 dead transitions. [2024-06-04 15:42:28,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 295 transitions, 3905 flow [2024-06-04 15:42:28,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:42:28,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:42:28,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-04 15:42:28,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43360433604336046 [2024-06-04 15:42:28,854 INFO L175 Difference]: Start difference. First operand has 207 places, 251 transitions, 2891 flow. Second operand 9 states and 160 transitions. [2024-06-04 15:42:28,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 295 transitions, 3905 flow [2024-06-04 15:42:29,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 295 transitions, 3853 flow, removed 20 selfloop flow, removed 2 redundant places. [2024-06-04 15:42:29,187 INFO L231 Difference]: Finished difference. Result has 214 places, 253 transitions, 3087 flow [2024-06-04 15:42:29,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2839, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3087, PETRI_PLACES=214, PETRI_TRANSITIONS=253} [2024-06-04 15:42:29,187 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 172 predicate places. [2024-06-04 15:42:29,187 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 253 transitions, 3087 flow [2024-06-04 15:42:29,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:29,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:42:29,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:42:29,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-04 15:42:29,188 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:42:29,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:42:29,188 INFO L85 PathProgramCache]: Analyzing trace with hash -868629399, now seen corresponding path program 4 times [2024-06-04 15:42:29,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:42:29,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187472626] [2024-06-04 15:42:29,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:42:29,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:42:29,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:42:30,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:42:30,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:42:30,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187472626] [2024-06-04 15:42:30,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187472626] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:42:30,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:42:30,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:42:30,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325951715] [2024-06-04 15:42:30,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:42:30,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:42:30,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:42:30,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:42:30,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:42:30,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:42:30,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 253 transitions, 3087 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:30,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:42:30,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:42:30,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:42:31,096 INFO L124 PetriNetUnfolderBase]: 2865/4408 cut-off events. [2024-06-04 15:42:31,096 INFO L125 PetriNetUnfolderBase]: For 281139/281166 co-relation queries the response was YES. [2024-06-04 15:42:31,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34926 conditions, 4408 events. 2865/4408 cut-off events. For 281139/281166 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 23297 event pairs, 587 based on Foata normal form. 34/4428 useless extension candidates. Maximal degree in co-relation 34821. Up to 3676 conditions per place. [2024-06-04 15:42:31,141 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 201 selfloop transitions, 87 changer transitions 0/291 dead transitions. [2024-06-04 15:42:31,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 291 transitions, 3863 flow [2024-06-04 15:42:31,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:42:31,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:42:31,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-04 15:42:31,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4254742547425474 [2024-06-04 15:42:31,142 INFO L175 Difference]: Start difference. First operand has 214 places, 253 transitions, 3087 flow. Second operand 9 states and 157 transitions. [2024-06-04 15:42:31,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 291 transitions, 3863 flow [2024-06-04 15:42:31,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 291 transitions, 3718 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-04 15:42:31,402 INFO L231 Difference]: Finished difference. Result has 218 places, 255 transitions, 3195 flow [2024-06-04 15:42:31,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2950, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3195, PETRI_PLACES=218, PETRI_TRANSITIONS=255} [2024-06-04 15:42:31,403 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 176 predicate places. [2024-06-04 15:42:31,403 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 255 transitions, 3195 flow [2024-06-04 15:42:31,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:31,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:42:31,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:42:31,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-04 15:42:31,403 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:42:31,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:42:31,404 INFO L85 PathProgramCache]: Analyzing trace with hash -692059519, now seen corresponding path program 6 times [2024-06-04 15:42:31,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:42:31,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401183777] [2024-06-04 15:42:31,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:42:31,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:42:31,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:42:32,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:42:32,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:42:32,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401183777] [2024-06-04 15:42:32,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401183777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:42:32,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:42:32,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:42:32,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880693037] [2024-06-04 15:42:32,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:42:32,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:42:32,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:42:32,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:42:32,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:42:32,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:42:32,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 255 transitions, 3195 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:32,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:42:32,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:42:32,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:42:33,468 INFO L124 PetriNetUnfolderBase]: 2882/4435 cut-off events. [2024-06-04 15:42:33,468 INFO L125 PetriNetUnfolderBase]: For 270803/270830 co-relation queries the response was YES. [2024-06-04 15:42:33,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35498 conditions, 4435 events. 2882/4435 cut-off events. For 270803/270830 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 23518 event pairs, 606 based on Foata normal form. 14/4435 useless extension candidates. Maximal degree in co-relation 35391. Up to 3823 conditions per place. [2024-06-04 15:42:33,512 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 199 selfloop transitions, 87 changer transitions 0/289 dead transitions. [2024-06-04 15:42:33,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 289 transitions, 3935 flow [2024-06-04 15:42:33,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:42:33,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:42:33,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-04 15:42:33,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4173441734417344 [2024-06-04 15:42:33,513 INFO L175 Difference]: Start difference. First operand has 218 places, 255 transitions, 3195 flow. Second operand 9 states and 154 transitions. [2024-06-04 15:42:33,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 289 transitions, 3935 flow [2024-06-04 15:42:33,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 289 transitions, 3724 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-04 15:42:33,825 INFO L231 Difference]: Finished difference. Result has 220 places, 257 transitions, 3237 flow [2024-06-04 15:42:33,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2984, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3237, PETRI_PLACES=220, PETRI_TRANSITIONS=257} [2024-06-04 15:42:33,825 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 178 predicate places. [2024-06-04 15:42:33,826 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 257 transitions, 3237 flow [2024-06-04 15:42:33,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:33,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:42:33,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:42:33,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-04 15:42:33,826 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:42:33,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:42:33,827 INFO L85 PathProgramCache]: Analyzing trace with hash 2083421317, now seen corresponding path program 5 times [2024-06-04 15:42:33,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:42:33,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863813368] [2024-06-04 15:42:33,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:42:33,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:42:33,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:42:35,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:42:35,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:42:35,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863813368] [2024-06-04 15:42:35,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863813368] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:42:35,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:42:35,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:42:35,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138997243] [2024-06-04 15:42:35,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:42:35,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:42:35,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:42:35,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:42:35,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:42:35,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:42:35,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 257 transitions, 3237 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:35,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:42:35,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:42:35,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:42:36,092 INFO L124 PetriNetUnfolderBase]: 2907/4482 cut-off events. [2024-06-04 15:42:36,092 INFO L125 PetriNetUnfolderBase]: For 288700/288727 co-relation queries the response was YES. [2024-06-04 15:42:36,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35426 conditions, 4482 events. 2907/4482 cut-off events. For 288700/288727 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 23895 event pairs, 627 based on Foata normal form. 30/4498 useless extension candidates. Maximal degree in co-relation 35318. Up to 3926 conditions per place. [2024-06-04 15:42:36,139 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 223 selfloop transitions, 73 changer transitions 0/299 dead transitions. [2024-06-04 15:42:36,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 299 transitions, 4019 flow [2024-06-04 15:42:36,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:42:36,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:42:36,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-04 15:42:36,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4073170731707317 [2024-06-04 15:42:36,141 INFO L175 Difference]: Start difference. First operand has 220 places, 257 transitions, 3237 flow. Second operand 10 states and 167 transitions. [2024-06-04 15:42:36,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 299 transitions, 4019 flow [2024-06-04 15:42:36,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 299 transitions, 3780 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-04 15:42:36,484 INFO L231 Difference]: Finished difference. Result has 223 places, 259 transitions, 3202 flow [2024-06-04 15:42:36,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3000, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3202, PETRI_PLACES=223, PETRI_TRANSITIONS=259} [2024-06-04 15:42:36,484 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 181 predicate places. [2024-06-04 15:42:36,484 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 259 transitions, 3202 flow [2024-06-04 15:42:36,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:36,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:42:36,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:42:36,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-04 15:42:36,485 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:42:36,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:42:36,485 INFO L85 PathProgramCache]: Analyzing trace with hash -692063239, now seen corresponding path program 7 times [2024-06-04 15:42:36,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:42:36,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697365829] [2024-06-04 15:42:36,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:42:36,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:42:36,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:42:37,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:42:37,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:42:37,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697365829] [2024-06-04 15:42:37,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697365829] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:42:37,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:42:37,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:42:37,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266266268] [2024-06-04 15:42:37,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:42:37,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:42:37,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:42:37,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:42:37,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:42:37,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:42:37,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 259 transitions, 3202 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:37,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:42:37,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:42:37,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:42:38,592 INFO L124 PetriNetUnfolderBase]: 3035/4690 cut-off events. [2024-06-04 15:42:38,592 INFO L125 PetriNetUnfolderBase]: For 307883/307910 co-relation queries the response was YES. [2024-06-04 15:42:38,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37779 conditions, 4690 events. 3035/4690 cut-off events. For 307883/307910 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 25336 event pairs, 643 based on Foata normal form. 14/4690 useless extension candidates. Maximal degree in co-relation 37670. Up to 3709 conditions per place. [2024-06-04 15:42:38,640 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 205 selfloop transitions, 94 changer transitions 0/302 dead transitions. [2024-06-04 15:42:38,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 302 transitions, 4274 flow [2024-06-04 15:42:38,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:42:38,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:42:38,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-04 15:42:38,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43360433604336046 [2024-06-04 15:42:38,642 INFO L175 Difference]: Start difference. First operand has 223 places, 259 transitions, 3202 flow. Second operand 9 states and 160 transitions. [2024-06-04 15:42:38,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 302 transitions, 4274 flow [2024-06-04 15:42:39,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 302 transitions, 4124 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-04 15:42:39,144 INFO L231 Difference]: Finished difference. Result has 226 places, 264 transitions, 3417 flow [2024-06-04 15:42:39,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3052, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3417, PETRI_PLACES=226, PETRI_TRANSITIONS=264} [2024-06-04 15:42:39,144 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 184 predicate places. [2024-06-04 15:42:39,145 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 264 transitions, 3417 flow [2024-06-04 15:42:39,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:39,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:42:39,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:42:39,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-04 15:42:39,145 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:42:39,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:42:39,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1945639449, now seen corresponding path program 6 times [2024-06-04 15:42:39,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:42:39,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102375782] [2024-06-04 15:42:39,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:42:39,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:42:39,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:42:39,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:42:39,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:42:39,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102375782] [2024-06-04 15:42:39,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102375782] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:42:39,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:42:39,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:42:39,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986446271] [2024-06-04 15:42:39,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:42:39,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:42:39,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:42:39,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:42:39,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:42:40,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:42:40,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 264 transitions, 3417 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:40,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:42:40,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:42:40,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:42:41,065 INFO L124 PetriNetUnfolderBase]: 3154/4891 cut-off events. [2024-06-04 15:42:41,065 INFO L125 PetriNetUnfolderBase]: For 352725/352752 co-relation queries the response was YES. [2024-06-04 15:42:41,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40111 conditions, 4891 events. 3154/4891 cut-off events. For 352725/352752 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 26672 event pairs, 609 based on Foata normal form. 26/4903 useless extension candidates. Maximal degree in co-relation 40000. Up to 2646 conditions per place. [2024-06-04 15:42:41,111 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 202 selfloop transitions, 103 changer transitions 0/308 dead transitions. [2024-06-04 15:42:41,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 308 transitions, 4498 flow [2024-06-04 15:42:41,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:42:41,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:42:41,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-04 15:42:41,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4281842818428184 [2024-06-04 15:42:41,113 INFO L175 Difference]: Start difference. First operand has 226 places, 264 transitions, 3417 flow. Second operand 9 states and 158 transitions. [2024-06-04 15:42:41,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 308 transitions, 4498 flow [2024-06-04 15:42:41,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 308 transitions, 4277 flow, removed 49 selfloop flow, removed 6 redundant places. [2024-06-04 15:42:41,554 INFO L231 Difference]: Finished difference. Result has 230 places, 267 transitions, 3576 flow [2024-06-04 15:42:41,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3208, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3576, PETRI_PLACES=230, PETRI_TRANSITIONS=267} [2024-06-04 15:42:41,555 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 188 predicate places. [2024-06-04 15:42:41,555 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 267 transitions, 3576 flow [2024-06-04 15:42:41,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:41,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:42:41,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:42:41,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-04 15:42:41,556 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:42:41,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:42:41,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1914166181, now seen corresponding path program 8 times [2024-06-04 15:42:41,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:42:41,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659723517] [2024-06-04 15:42:41,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:42:41,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:42:41,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:42:42,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:42:42,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:42:42,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659723517] [2024-06-04 15:42:42,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659723517] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:42:42,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:42:42,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:42:42,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341188217] [2024-06-04 15:42:42,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:42:42,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:42:42,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:42:42,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:42:42,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:42:42,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:42:42,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 267 transitions, 3576 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:42,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:42:42,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:42:42,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:42:43,707 INFO L124 PetriNetUnfolderBase]: 3110/4823 cut-off events. [2024-06-04 15:42:43,707 INFO L125 PetriNetUnfolderBase]: For 341268/341295 co-relation queries the response was YES. [2024-06-04 15:42:43,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38957 conditions, 4823 events. 3110/4823 cut-off events. For 341268/341295 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 26340 event pairs, 679 based on Foata normal form. 34/4843 useless extension candidates. Maximal degree in co-relation 38844. Up to 4091 conditions per place. [2024-06-04 15:42:43,756 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 217 selfloop transitions, 83 changer transitions 0/303 dead transitions. [2024-06-04 15:42:43,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 303 transitions, 4310 flow [2024-06-04 15:42:43,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:42:43,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:42:43,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-04 15:42:43,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43089430894308944 [2024-06-04 15:42:43,758 INFO L175 Difference]: Start difference. First operand has 230 places, 267 transitions, 3576 flow. Second operand 9 states and 159 transitions. [2024-06-04 15:42:43,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 303 transitions, 4310 flow [2024-06-04 15:42:44,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 303 transitions, 4126 flow, removed 42 selfloop flow, removed 5 redundant places. [2024-06-04 15:42:44,268 INFO L231 Difference]: Finished difference. Result has 234 places, 267 transitions, 3567 flow [2024-06-04 15:42:44,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3392, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3567, PETRI_PLACES=234, PETRI_TRANSITIONS=267} [2024-06-04 15:42:44,268 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 192 predicate places. [2024-06-04 15:42:44,268 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 267 transitions, 3567 flow [2024-06-04 15:42:44,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:44,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:42:44,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:42:44,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-04 15:42:44,269 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:42:44,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:42:44,269 INFO L85 PathProgramCache]: Analyzing trace with hash -686337787, now seen corresponding path program 7 times [2024-06-04 15:42:44,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:42:44,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218467576] [2024-06-04 15:42:44,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:42:44,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:42:44,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:42:45,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:42:45,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:42:45,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218467576] [2024-06-04 15:42:45,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218467576] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:42:45,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:42:45,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:42:45,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395938115] [2024-06-04 15:42:45,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:42:45,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:42:45,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:42:45,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:42:45,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:42:45,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:42:45,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 267 transitions, 3567 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:45,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:42:45,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:42:45,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:42:46,190 INFO L124 PetriNetUnfolderBase]: 3118/4843 cut-off events. [2024-06-04 15:42:46,190 INFO L125 PetriNetUnfolderBase]: For 328395/328422 co-relation queries the response was YES. [2024-06-04 15:42:46,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38609 conditions, 4843 events. 3118/4843 cut-off events. For 328395/328422 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 26505 event pairs, 671 based on Foata normal form. 26/4855 useless extension candidates. Maximal degree in co-relation 38494. Up to 3758 conditions per place. [2024-06-04 15:42:46,242 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 221 selfloop transitions, 85 changer transitions 0/309 dead transitions. [2024-06-04 15:42:46,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 309 transitions, 4578 flow [2024-06-04 15:42:46,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:42:46,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:42:46,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-04 15:42:46,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2024-06-04 15:42:46,244 INFO L175 Difference]: Start difference. First operand has 234 places, 267 transitions, 3567 flow. Second operand 9 states and 162 transitions. [2024-06-04 15:42:46,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 309 transitions, 4578 flow [2024-06-04 15:42:46,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 309 transitions, 4409 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-04 15:42:46,633 INFO L231 Difference]: Finished difference. Result has 236 places, 268 transitions, 3613 flow [2024-06-04 15:42:46,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3398, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3613, PETRI_PLACES=236, PETRI_TRANSITIONS=268} [2024-06-04 15:42:46,634 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 194 predicate places. [2024-06-04 15:42:46,634 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 268 transitions, 3613 flow [2024-06-04 15:42:46,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:46,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:42:46,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:42:46,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-04 15:42:46,635 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:42:46,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:42:46,635 INFO L85 PathProgramCache]: Analyzing trace with hash -929948750, now seen corresponding path program 2 times [2024-06-04 15:42:46,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:42:46,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930938318] [2024-06-04 15:42:46,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:42:46,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:42:46,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:42:47,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:42:47,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:42:47,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930938318] [2024-06-04 15:42:47,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930938318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:42:47,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:42:47,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:42:47,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158707904] [2024-06-04 15:42:47,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:42:47,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:42:47,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:42:47,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:42:47,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:42:47,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:42:47,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 268 transitions, 3613 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:47,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:42:47,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:42:47,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:42:48,522 INFO L124 PetriNetUnfolderBase]: 3128/4852 cut-off events. [2024-06-04 15:42:48,523 INFO L125 PetriNetUnfolderBase]: For 321917/321921 co-relation queries the response was YES. [2024-06-04 15:42:48,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38928 conditions, 4852 events. 3128/4852 cut-off events. For 321917/321921 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 26603 event pairs, 735 based on Foata normal form. 6/4855 useless extension candidates. Maximal degree in co-relation 38812. Up to 4770 conditions per place. [2024-06-04 15:42:48,580 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 254 selfloop transitions, 33 changer transitions 0/290 dead transitions. [2024-06-04 15:42:48,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 290 transitions, 4399 flow [2024-06-04 15:42:48,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:42:48,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:42:48,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 103 transitions. [2024-06-04 15:42:48,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4186991869918699 [2024-06-04 15:42:48,584 INFO L175 Difference]: Start difference. First operand has 236 places, 268 transitions, 3613 flow. Second operand 6 states and 103 transitions. [2024-06-04 15:42:48,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 290 transitions, 4399 flow [2024-06-04 15:42:49,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 290 transitions, 4162 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-04 15:42:49,102 INFO L231 Difference]: Finished difference. Result has 235 places, 271 transitions, 3497 flow [2024-06-04 15:42:49,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3376, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3497, PETRI_PLACES=235, PETRI_TRANSITIONS=271} [2024-06-04 15:42:49,103 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 193 predicate places. [2024-06-04 15:42:49,103 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 271 transitions, 3497 flow [2024-06-04 15:42:49,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:49,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:42:49,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:42:49,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-04 15:42:49,103 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:42:49,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:42:49,103 INFO L85 PathProgramCache]: Analyzing trace with hash -268045190, now seen corresponding path program 3 times [2024-06-04 15:42:49,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:42:49,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958667687] [2024-06-04 15:42:49,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:42:49,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:42:49,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:42:49,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:42:49,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:42:49,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958667687] [2024-06-04 15:42:49,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958667687] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:42:49,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:42:49,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:42:49,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862317137] [2024-06-04 15:42:49,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:42:49,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:42:49,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:42:49,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:42:49,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:42:49,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:42:49,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 271 transitions, 3497 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:49,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:42:49,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:42:49,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:42:50,874 INFO L124 PetriNetUnfolderBase]: 3122/4844 cut-off events. [2024-06-04 15:42:50,875 INFO L125 PetriNetUnfolderBase]: For 322890/322894 co-relation queries the response was YES. [2024-06-04 15:42:50,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38217 conditions, 4844 events. 3122/4844 cut-off events. For 322890/322894 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 26600 event pairs, 734 based on Foata normal form. 6/4847 useless extension candidates. Maximal degree in co-relation 38100. Up to 4779 conditions per place. [2024-06-04 15:42:50,933 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 257 selfloop transitions, 27 changer transitions 0/287 dead transitions. [2024-06-04 15:42:50,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 287 transitions, 4121 flow [2024-06-04 15:42:50,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 15:42:50,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 15:42:50,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 90 transitions. [2024-06-04 15:42:50,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2024-06-04 15:42:50,935 INFO L175 Difference]: Start difference. First operand has 235 places, 271 transitions, 3497 flow. Second operand 5 states and 90 transitions. [2024-06-04 15:42:50,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 287 transitions, 4121 flow [2024-06-04 15:42:51,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 287 transitions, 4023 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-06-04 15:42:51,378 INFO L231 Difference]: Finished difference. Result has 236 places, 271 transitions, 3475 flow [2024-06-04 15:42:51,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3399, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3475, PETRI_PLACES=236, PETRI_TRANSITIONS=271} [2024-06-04 15:42:51,379 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 194 predicate places. [2024-06-04 15:42:51,379 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 271 transitions, 3475 flow [2024-06-04 15:42:51,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:51,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:42:51,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:42:51,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-04 15:42:51,379 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:42:51,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:42:51,380 INFO L85 PathProgramCache]: Analyzing trace with hash -2049481374, now seen corresponding path program 1 times [2024-06-04 15:42:51,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:42:51,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063980752] [2024-06-04 15:42:51,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:42:51,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:42:51,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:42:52,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:42:52,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:42:52,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063980752] [2024-06-04 15:42:52,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063980752] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:42:52,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:42:52,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:42:52,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098000812] [2024-06-04 15:42:52,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:42:52,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:42:52,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:42:52,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:42:52,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:42:52,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-04 15:42:52,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 271 transitions, 3475 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:52,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:42:52,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-04 15:42:52,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:42:53,020 INFO L124 PetriNetUnfolderBase]: 3023/4757 cut-off events. [2024-06-04 15:42:53,020 INFO L125 PetriNetUnfolderBase]: For 322933/322933 co-relation queries the response was YES. [2024-06-04 15:42:53,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37746 conditions, 4757 events. 3023/4757 cut-off events. For 322933/322933 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 26575 event pairs, 725 based on Foata normal form. 3/4754 useless extension candidates. Maximal degree in co-relation 37629. Up to 4549 conditions per place. [2024-06-04 15:42:53,070 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 244 selfloop transitions, 25 changer transitions 0/297 dead transitions. [2024-06-04 15:42:53,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 297 transitions, 4289 flow [2024-06-04 15:42:53,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:42:53,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:42:53,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 119 transitions. [2024-06-04 15:42:53,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2024-06-04 15:42:53,071 INFO L175 Difference]: Start difference. First operand has 236 places, 271 transitions, 3475 flow. Second operand 7 states and 119 transitions. [2024-06-04 15:42:53,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 297 transitions, 4289 flow [2024-06-04 15:42:53,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 297 transitions, 4235 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-04 15:42:53,647 INFO L231 Difference]: Finished difference. Result has 239 places, 277 transitions, 3591 flow [2024-06-04 15:42:53,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3421, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3591, PETRI_PLACES=239, PETRI_TRANSITIONS=277} [2024-06-04 15:42:53,647 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 197 predicate places. [2024-06-04 15:42:53,648 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 277 transitions, 3591 flow [2024-06-04 15:42:53,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:53,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:42:53,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:42:53,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-04 15:42:53,648 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:42:53,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:42:53,649 INFO L85 PathProgramCache]: Analyzing trace with hash -2049361404, now seen corresponding path program 2 times [2024-06-04 15:42:53,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:42:53,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789060141] [2024-06-04 15:42:53,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:42:53,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:42:53,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:42:54,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:42:54,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:42:54,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789060141] [2024-06-04 15:42:54,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789060141] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:42:54,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:42:54,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:42:54,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993084131] [2024-06-04 15:42:54,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:42:54,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:42:54,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:42:54,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:42:54,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:42:54,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-04 15:42:54,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 277 transitions, 3591 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:54,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:42:54,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-04 15:42:54,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:42:55,461 INFO L124 PetriNetUnfolderBase]: 3052/4798 cut-off events. [2024-06-04 15:42:55,462 INFO L125 PetriNetUnfolderBase]: For 338102/338102 co-relation queries the response was YES. [2024-06-04 15:42:55,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38496 conditions, 4798 events. 3052/4798 cut-off events. For 338102/338102 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 26869 event pairs, 724 based on Foata normal form. 3/4795 useless extension candidates. Maximal degree in co-relation 38378. Up to 4601 conditions per place. [2024-06-04 15:42:55,507 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 248 selfloop transitions, 25 changer transitions 0/301 dead transitions. [2024-06-04 15:42:55,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 301 transitions, 4292 flow [2024-06-04 15:42:55,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:42:55,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:42:55,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 114 transitions. [2024-06-04 15:42:55,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.397212543554007 [2024-06-04 15:42:55,508 INFO L175 Difference]: Start difference. First operand has 239 places, 277 transitions, 3591 flow. Second operand 7 states and 114 transitions. [2024-06-04 15:42:55,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 301 transitions, 4292 flow [2024-06-04 15:42:56,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 301 transitions, 4215 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-04 15:42:56,024 INFO L231 Difference]: Finished difference. Result has 243 places, 285 transitions, 3682 flow [2024-06-04 15:42:56,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3521, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3682, PETRI_PLACES=243, PETRI_TRANSITIONS=285} [2024-06-04 15:42:56,025 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 201 predicate places. [2024-06-04 15:42:56,025 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 285 transitions, 3682 flow [2024-06-04 15:42:56,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:56,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:42:56,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:42:56,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-04 15:42:56,025 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:42:56,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:42:56,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1525222854, now seen corresponding path program 3 times [2024-06-04 15:42:56,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:42:56,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698646854] [2024-06-04 15:42:56,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:42:56,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:42:56,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:42:56,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:42:56,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:42:56,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698646854] [2024-06-04 15:42:56,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698646854] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:42:56,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:42:56,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:42:56,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082182916] [2024-06-04 15:42:56,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:42:56,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:42:56,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:42:56,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:42:56,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:42:56,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-04 15:42:56,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 285 transitions, 3682 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:56,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:42:56,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-04 15:42:56,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:42:57,712 INFO L124 PetriNetUnfolderBase]: 3048/4791 cut-off events. [2024-06-04 15:42:57,712 INFO L125 PetriNetUnfolderBase]: For 340673/340673 co-relation queries the response was YES. [2024-06-04 15:42:57,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38471 conditions, 4791 events. 3048/4791 cut-off events. For 340673/340673 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 26745 event pairs, 725 based on Foata normal form. 3/4788 useless extension candidates. Maximal degree in co-relation 38351. Up to 4591 conditions per place. [2024-06-04 15:42:57,762 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 251 selfloop transitions, 23 changer transitions 0/302 dead transitions. [2024-06-04 15:42:57,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 302 transitions, 4284 flow [2024-06-04 15:42:57,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:42:57,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:42:57,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-06-04 15:42:57,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4268292682926829 [2024-06-04 15:42:57,764 INFO L175 Difference]: Start difference. First operand has 243 places, 285 transitions, 3682 flow. Second operand 6 states and 105 transitions. [2024-06-04 15:42:57,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 302 transitions, 4284 flow [2024-06-04 15:42:58,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 302 transitions, 4153 flow, removed 44 selfloop flow, removed 4 redundant places. [2024-06-04 15:42:58,417 INFO L231 Difference]: Finished difference. Result has 245 places, 285 transitions, 3608 flow [2024-06-04 15:42:58,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3551, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3608, PETRI_PLACES=245, PETRI_TRANSITIONS=285} [2024-06-04 15:42:58,417 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 203 predicate places. [2024-06-04 15:42:58,417 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 285 transitions, 3608 flow [2024-06-04 15:42:58,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:58,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:42:58,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:42:58,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-04 15:42:58,418 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:42:58,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:42:58,418 INFO L85 PathProgramCache]: Analyzing trace with hash -268030310, now seen corresponding path program 1 times [2024-06-04 15:42:58,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:42:58,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817654023] [2024-06-04 15:42:58,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:42:58,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:42:58,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:42:59,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:42:59,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:42:59,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817654023] [2024-06-04 15:42:59,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817654023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:42:59,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:42:59,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:42:59,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401773308] [2024-06-04 15:42:59,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:42:59,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:42:59,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:42:59,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:42:59,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:42:59,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:42:59,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 285 transitions, 3608 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:59,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:42:59,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:42:59,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:43:00,472 INFO L124 PetriNetUnfolderBase]: 3161/4903 cut-off events. [2024-06-04 15:43:00,473 INFO L125 PetriNetUnfolderBase]: For 346383/346383 co-relation queries the response was YES. [2024-06-04 15:43:00,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38997 conditions, 4903 events. 3161/4903 cut-off events. For 346383/346383 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 26842 event pairs, 763 based on Foata normal form. 2/4902 useless extension candidates. Maximal degree in co-relation 38876. Up to 4865 conditions per place. [2024-06-04 15:43:00,530 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 280 selfloop transitions, 13 changer transitions 0/296 dead transitions. [2024-06-04 15:43:00,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 296 transitions, 4246 flow [2024-06-04 15:43:00,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 15:43:00,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 15:43:00,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 81 transitions. [2024-06-04 15:43:00,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951219512195122 [2024-06-04 15:43:00,532 INFO L175 Difference]: Start difference. First operand has 245 places, 285 transitions, 3608 flow. Second operand 5 states and 81 transitions. [2024-06-04 15:43:00,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 296 transitions, 4246 flow [2024-06-04 15:43:01,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 296 transitions, 4189 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-04 15:43:01,093 INFO L231 Difference]: Finished difference. Result has 245 places, 287 transitions, 3612 flow [2024-06-04 15:43:01,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3551, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3612, PETRI_PLACES=245, PETRI_TRANSITIONS=287} [2024-06-04 15:43:01,093 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 203 predicate places. [2024-06-04 15:43:01,094 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 287 transitions, 3612 flow [2024-06-04 15:43:01,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:01,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:43:01,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:43:01,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-04 15:43:01,094 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:43:01,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:43:01,094 INFO L85 PathProgramCache]: Analyzing trace with hash 185561816, now seen corresponding path program 1 times [2024-06-04 15:43:01,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:43:01,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257669292] [2024-06-04 15:43:01,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:43:01,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:43:01,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:43:02,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:43:02,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:43:02,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257669292] [2024-06-04 15:43:02,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257669292] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:43:02,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:43:02,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:43:02,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983985971] [2024-06-04 15:43:02,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:43:02,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:43:02,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:43:02,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:43:02,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:43:02,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:43:02,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 287 transitions, 3612 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:02,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:43:02,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:43:02,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:43:03,735 INFO L124 PetriNetUnfolderBase]: 3202/4970 cut-off events. [2024-06-04 15:43:03,735 INFO L125 PetriNetUnfolderBase]: For 371296/371300 co-relation queries the response was YES. [2024-06-04 15:43:03,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39692 conditions, 4970 events. 3202/4970 cut-off events. For 371296/371300 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 27237 event pairs, 582 based on Foata normal form. 16/4983 useless extension candidates. Maximal degree in co-relation 39570. Up to 4657 conditions per place. [2024-06-04 15:43:03,781 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 298 selfloop transitions, 30 changer transitions 0/331 dead transitions. [2024-06-04 15:43:03,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 331 transitions, 4450 flow [2024-06-04 15:43:03,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:43:03,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:43:03,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-04 15:43:03,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3902439024390244 [2024-06-04 15:43:03,783 INFO L175 Difference]: Start difference. First operand has 245 places, 287 transitions, 3612 flow. Second operand 10 states and 160 transitions. [2024-06-04 15:43:03,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 331 transitions, 4450 flow [2024-06-04 15:43:04,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 331 transitions, 4405 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-04 15:43:04,312 INFO L231 Difference]: Finished difference. Result has 252 places, 288 transitions, 3677 flow [2024-06-04 15:43:04,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3567, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3677, PETRI_PLACES=252, PETRI_TRANSITIONS=288} [2024-06-04 15:43:04,313 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 210 predicate places. [2024-06-04 15:43:04,313 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 288 transitions, 3677 flow [2024-06-04 15:43:04,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:04,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:43:04,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:43:04,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-04 15:43:04,313 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:43:04,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:43:04,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1474689440, now seen corresponding path program 2 times [2024-06-04 15:43:04,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:43:04,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557969987] [2024-06-04 15:43:04,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:43:04,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:43:04,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:43:05,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:43:05,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:43:05,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557969987] [2024-06-04 15:43:05,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557969987] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:43:05,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:43:05,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:43:05,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381852366] [2024-06-04 15:43:05,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:43:05,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:43:05,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:43:05,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:43:05,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:43:05,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:43:05,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 288 transitions, 3677 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:05,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:43:05,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:43:05,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:43:07,131 INFO L124 PetriNetUnfolderBase]: 3243/5041 cut-off events. [2024-06-04 15:43:07,131 INFO L125 PetriNetUnfolderBase]: For 385512/385516 co-relation queries the response was YES. [2024-06-04 15:43:07,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40502 conditions, 5041 events. 3243/5041 cut-off events. For 385512/385516 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 27850 event pairs, 724 based on Foata normal form. 16/5054 useless extension candidates. Maximal degree in co-relation 40379. Up to 4717 conditions per place. [2024-06-04 15:43:07,193 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 291 selfloop transitions, 38 changer transitions 0/332 dead transitions. [2024-06-04 15:43:07,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 332 transitions, 4521 flow [2024-06-04 15:43:07,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:43:07,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:43:07,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-04 15:43:07,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3975609756097561 [2024-06-04 15:43:07,194 INFO L175 Difference]: Start difference. First operand has 252 places, 288 transitions, 3677 flow. Second operand 10 states and 163 transitions. [2024-06-04 15:43:07,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 332 transitions, 4521 flow [2024-06-04 15:43:07,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 332 transitions, 4437 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-04 15:43:07,853 INFO L231 Difference]: Finished difference. Result has 255 places, 289 transitions, 3721 flow [2024-06-04 15:43:07,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3593, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3721, PETRI_PLACES=255, PETRI_TRANSITIONS=289} [2024-06-04 15:43:07,854 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 213 predicate places. [2024-06-04 15:43:07,854 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 289 transitions, 3721 flow [2024-06-04 15:43:07,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:07,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:43:07,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:43:07,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-04 15:43:07,854 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:43:07,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:43:07,855 INFO L85 PathProgramCache]: Analyzing trace with hash 243769586, now seen corresponding path program 3 times [2024-06-04 15:43:07,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:43:07,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509519808] [2024-06-04 15:43:07,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:43:07,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:43:07,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:43:09,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:43:09,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:43:09,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509519808] [2024-06-04 15:43:09,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509519808] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:43:09,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:43:09,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:43:09,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413736386] [2024-06-04 15:43:09,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:43:09,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:43:09,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:43:09,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:43:09,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:43:09,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:43:09,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 289 transitions, 3721 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:09,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:43:09,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:43:09,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:43:10,561 INFO L124 PetriNetUnfolderBase]: 3284/5112 cut-off events. [2024-06-04 15:43:10,561 INFO L125 PetriNetUnfolderBase]: For 399167/399171 co-relation queries the response was YES. [2024-06-04 15:43:10,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40987 conditions, 5112 events. 3284/5112 cut-off events. For 399167/399171 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 28363 event pairs, 746 based on Foata normal form. 16/5125 useless extension candidates. Maximal degree in co-relation 40863. Up to 4834 conditions per place. [2024-06-04 15:43:10,620 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 294 selfloop transitions, 36 changer transitions 0/333 dead transitions. [2024-06-04 15:43:10,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 333 transitions, 4557 flow [2024-06-04 15:43:10,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:43:10,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:43:10,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-04 15:43:10,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951219512195122 [2024-06-04 15:43:10,622 INFO L175 Difference]: Start difference. First operand has 255 places, 289 transitions, 3721 flow. Second operand 10 states and 162 transitions. [2024-06-04 15:43:10,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 333 transitions, 4557 flow [2024-06-04 15:43:11,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 333 transitions, 4449 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-04 15:43:11,375 INFO L231 Difference]: Finished difference. Result has 257 places, 290 transitions, 3725 flow [2024-06-04 15:43:11,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3613, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3725, PETRI_PLACES=257, PETRI_TRANSITIONS=290} [2024-06-04 15:43:11,375 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 215 predicate places. [2024-06-04 15:43:11,375 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 290 transitions, 3725 flow [2024-06-04 15:43:11,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:11,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:43:11,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:43:11,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-04 15:43:11,376 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:43:11,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:43:11,377 INFO L85 PathProgramCache]: Analyzing trace with hash -316782640, now seen corresponding path program 1 times [2024-06-04 15:43:11,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:43:11,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109926887] [2024-06-04 15:43:11,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:43:11,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:43:11,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:43:12,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:43:12,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:43:12,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109926887] [2024-06-04 15:43:12,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109926887] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:43:12,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:43:12,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:43:12,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305582157] [2024-06-04 15:43:12,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:43:12,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:43:12,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:43:12,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:43:12,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:43:12,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:43:12,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 290 transitions, 3725 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:12,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:43:12,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:43:12,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:43:13,476 INFO L124 PetriNetUnfolderBase]: 3324/5168 cut-off events. [2024-06-04 15:43:13,476 INFO L125 PetriNetUnfolderBase]: For 398302/398306 co-relation queries the response was YES. [2024-06-04 15:43:13,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41322 conditions, 5168 events. 3324/5168 cut-off events. For 398302/398306 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 28676 event pairs, 774 based on Foata normal form. 8/5173 useless extension candidates. Maximal degree in co-relation 41197. Up to 4919 conditions per place. [2024-06-04 15:43:13,537 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 265 selfloop transitions, 68 changer transitions 0/336 dead transitions. [2024-06-04 15:43:13,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 336 transitions, 4799 flow [2024-06-04 15:43:13,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:43:13,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:43:13,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-04 15:43:13,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4176829268292683 [2024-06-04 15:43:13,538 INFO L175 Difference]: Start difference. First operand has 257 places, 290 transitions, 3725 flow. Second operand 8 states and 137 transitions. [2024-06-04 15:43:13,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 336 transitions, 4799 flow [2024-06-04 15:43:14,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 336 transitions, 4711 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-04 15:43:14,328 INFO L231 Difference]: Finished difference. Result has 258 places, 306 transitions, 4000 flow [2024-06-04 15:43:14,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3637, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4000, PETRI_PLACES=258, PETRI_TRANSITIONS=306} [2024-06-04 15:43:14,328 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 216 predicate places. [2024-06-04 15:43:14,329 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 306 transitions, 4000 flow [2024-06-04 15:43:14,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:14,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:43:14,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:43:14,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-04 15:43:14,329 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:43:14,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:43:14,329 INFO L85 PathProgramCache]: Analyzing trace with hash -2067384496, now seen corresponding path program 4 times [2024-06-04 15:43:14,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:43:14,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677166127] [2024-06-04 15:43:14,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:43:14,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:43:14,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:43:15,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:43:15,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:43:15,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677166127] [2024-06-04 15:43:15,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677166127] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:43:15,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:43:15,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:43:15,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566406794] [2024-06-04 15:43:15,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:43:15,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:43:15,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:43:15,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:43:15,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:43:15,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:43:15,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 306 transitions, 4000 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:15,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:43:15,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:43:15,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:43:17,052 INFO L124 PetriNetUnfolderBase]: 3365/5241 cut-off events. [2024-06-04 15:43:17,052 INFO L125 PetriNetUnfolderBase]: For 423427/423429 co-relation queries the response was YES. [2024-06-04 15:43:17,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42239 conditions, 5241 events. 3365/5241 cut-off events. For 423427/423429 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 29241 event pairs, 764 based on Foata normal form. 14/5252 useless extension candidates. Maximal degree in co-relation 42112. Up to 4884 conditions per place. [2024-06-04 15:43:17,243 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 297 selfloop transitions, 48 changer transitions 0/348 dead transitions. [2024-06-04 15:43:17,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 348 transitions, 4873 flow [2024-06-04 15:43:17,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:43:17,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:43:17,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-04 15:43:17,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3975609756097561 [2024-06-04 15:43:17,245 INFO L175 Difference]: Start difference. First operand has 258 places, 306 transitions, 4000 flow. Second operand 10 states and 163 transitions. [2024-06-04 15:43:17,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 348 transitions, 4873 flow [2024-06-04 15:43:17,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 348 transitions, 4786 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-04 15:43:17,946 INFO L231 Difference]: Finished difference. Result has 266 places, 308 transitions, 4075 flow [2024-06-04 15:43:17,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3913, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4075, PETRI_PLACES=266, PETRI_TRANSITIONS=308} [2024-06-04 15:43:17,947 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 224 predicate places. [2024-06-04 15:43:17,947 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 308 transitions, 4075 flow [2024-06-04 15:43:17,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:17,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:43:17,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:43:17,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-04 15:43:17,948 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:43:17,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:43:17,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1226509934, now seen corresponding path program 5 times [2024-06-04 15:43:17,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:43:17,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993599869] [2024-06-04 15:43:17,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:43:17,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:43:17,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:43:19,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:43:19,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:43:19,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993599869] [2024-06-04 15:43:19,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993599869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:43:19,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:43:19,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:43:19,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891001307] [2024-06-04 15:43:19,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:43:19,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:43:19,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:43:19,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:43:19,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:43:19,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:43:19,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 308 transitions, 4075 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 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) [2024-06-04 15:43:19,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:43:19,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:43:19,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:43:20,443 INFO L124 PetriNetUnfolderBase]: 3345/5209 cut-off events. [2024-06-04 15:43:20,443 INFO L125 PetriNetUnfolderBase]: For 417405/417407 co-relation queries the response was YES. [2024-06-04 15:43:20,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41732 conditions, 5209 events. 3345/5209 cut-off events. For 417405/417407 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 29051 event pairs, 720 based on Foata normal form. 14/5220 useless extension candidates. Maximal degree in co-relation 41602. Up to 4673 conditions per place. [2024-06-04 15:43:20,498 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 287 selfloop transitions, 53 changer transitions 0/343 dead transitions. [2024-06-04 15:43:20,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 343 transitions, 4869 flow [2024-06-04 15:43:20,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:43:20,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:43:20,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-04 15:43:20,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010840108401084 [2024-06-04 15:43:20,499 INFO L175 Difference]: Start difference. First operand has 266 places, 308 transitions, 4075 flow. Second operand 9 states and 148 transitions. [2024-06-04 15:43:20,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 343 transitions, 4869 flow [2024-06-04 15:43:21,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 343 transitions, 4728 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-04 15:43:21,360 INFO L231 Difference]: Finished difference. Result has 268 places, 308 transitions, 4050 flow [2024-06-04 15:43:21,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3934, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4050, PETRI_PLACES=268, PETRI_TRANSITIONS=308} [2024-06-04 15:43:21,360 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 226 predicate places. [2024-06-04 15:43:21,360 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 308 transitions, 4050 flow [2024-06-04 15:43:21,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 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) [2024-06-04 15:43:21,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:43:21,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:43:21,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-04 15:43:21,361 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:43:21,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:43:21,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1226625254, now seen corresponding path program 6 times [2024-06-04 15:43:21,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:43:21,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606150093] [2024-06-04 15:43:21,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:43:21,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:43:21,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:43:22,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:43:22,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:43:22,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606150093] [2024-06-04 15:43:22,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606150093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:43:22,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:43:22,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:43:22,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017011171] [2024-06-04 15:43:22,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:43:22,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:43:22,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:43:22,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:43:22,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:43:22,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:43:22,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 308 transitions, 4050 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 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) [2024-06-04 15:43:22,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:43:22,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:43:22,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:43:23,769 INFO L124 PetriNetUnfolderBase]: 3386/5280 cut-off events. [2024-06-04 15:43:23,769 INFO L125 PetriNetUnfolderBase]: For 431565/431567 co-relation queries the response was YES. [2024-06-04 15:43:23,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42293 conditions, 5280 events. 3386/5280 cut-off events. For 431565/431567 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 29599 event pairs, 731 based on Foata normal form. 14/5291 useless extension candidates. Maximal degree in co-relation 42162. Up to 4726 conditions per place. [2024-06-04 15:43:23,830 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 285 selfloop transitions, 56 changer transitions 0/344 dead transitions. [2024-06-04 15:43:23,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 344 transitions, 4890 flow [2024-06-04 15:43:23,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:43:23,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:43:23,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-04 15:43:23,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010840108401084 [2024-06-04 15:43:23,832 INFO L175 Difference]: Start difference. First operand has 268 places, 308 transitions, 4050 flow. Second operand 9 states and 148 transitions. [2024-06-04 15:43:23,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 344 transitions, 4890 flow [2024-06-04 15:43:24,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 344 transitions, 4751 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-04 15:43:24,593 INFO L231 Difference]: Finished difference. Result has 269 places, 309 transitions, 4079 flow [2024-06-04 15:43:24,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3911, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4079, PETRI_PLACES=269, PETRI_TRANSITIONS=309} [2024-06-04 15:43:24,594 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 227 predicate places. [2024-06-04 15:43:24,594 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 309 transitions, 4079 flow [2024-06-04 15:43:24,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 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) [2024-06-04 15:43:24,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:43:24,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:43:24,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-04 15:43:24,594 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:43:24,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:43:24,594 INFO L85 PathProgramCache]: Analyzing trace with hash 920862936, now seen corresponding path program 2 times [2024-06-04 15:43:24,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:43:24,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787464118] [2024-06-04 15:43:24,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:43:24,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:43:24,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:43:25,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:43:25,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:43:25,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787464118] [2024-06-04 15:43:25,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787464118] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:43:25,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:43:25,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:43:25,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079604764] [2024-06-04 15:43:25,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:43:25,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:43:25,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:43:25,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:43:25,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:43:25,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:43:25,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 309 transitions, 4079 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:25,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:43:25,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:43:25,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:43:26,851 INFO L124 PetriNetUnfolderBase]: 3448/5366 cut-off events. [2024-06-04 15:43:26,851 INFO L125 PetriNetUnfolderBase]: For 414354/414356 co-relation queries the response was YES. [2024-06-04 15:43:26,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42788 conditions, 5366 events. 3448/5366 cut-off events. For 414354/414356 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 30055 event pairs, 801 based on Foata normal form. 6/5369 useless extension candidates. Maximal degree in co-relation 42656. Up to 5075 conditions per place. [2024-06-04 15:43:26,913 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 274 selfloop transitions, 71 changer transitions 0/348 dead transitions. [2024-06-04 15:43:26,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 348 transitions, 5257 flow [2024-06-04 15:43:26,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:43:26,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:43:26,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-04 15:43:26,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2024-06-04 15:43:26,915 INFO L175 Difference]: Start difference. First operand has 269 places, 309 transitions, 4079 flow. Second operand 8 states and 136 transitions. [2024-06-04 15:43:26,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 348 transitions, 5257 flow [2024-06-04 15:43:27,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 348 transitions, 5114 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-04 15:43:27,804 INFO L231 Difference]: Finished difference. Result has 272 places, 320 transitions, 4255 flow [2024-06-04 15:43:27,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3940, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4255, PETRI_PLACES=272, PETRI_TRANSITIONS=320} [2024-06-04 15:43:27,804 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 230 predicate places. [2024-06-04 15:43:27,804 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 320 transitions, 4255 flow [2024-06-04 15:43:27,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:27,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:43:27,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:43:27,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-04 15:43:27,805 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:43:27,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:43:27,805 INFO L85 PathProgramCache]: Analyzing trace with hash 920874096, now seen corresponding path program 3 times [2024-06-04 15:43:27,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:43:27,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964837825] [2024-06-04 15:43:27,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:43:27,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:43:27,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:43:28,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:43:28,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:43:28,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964837825] [2024-06-04 15:43:28,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964837825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:43:28,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:43:28,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:43:28,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83347045] [2024-06-04 15:43:28,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:43:28,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:43:28,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:43:28,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:43:28,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:43:28,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:43:28,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 320 transitions, 4255 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:28,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:43:28,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:43:28,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:43:29,934 INFO L124 PetriNetUnfolderBase]: 3436/5350 cut-off events. [2024-06-04 15:43:29,934 INFO L125 PetriNetUnfolderBase]: For 402891/402893 co-relation queries the response was YES. [2024-06-04 15:43:29,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42250 conditions, 5350 events. 3436/5350 cut-off events. For 402891/402893 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 29971 event pairs, 797 based on Foata normal form. 6/5353 useless extension candidates. Maximal degree in co-relation 42116. Up to 5067 conditions per place. [2024-06-04 15:43:29,997 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 264 selfloop transitions, 77 changer transitions 0/344 dead transitions. [2024-06-04 15:43:29,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 344 transitions, 5140 flow [2024-06-04 15:43:29,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:43:29,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:43:29,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-04 15:43:29,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4054878048780488 [2024-06-04 15:43:29,998 INFO L175 Difference]: Start difference. First operand has 272 places, 320 transitions, 4255 flow. Second operand 8 states and 133 transitions. [2024-06-04 15:43:29,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 344 transitions, 5140 flow [2024-06-04 15:43:31,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 344 transitions, 4984 flow, removed 33 selfloop flow, removed 4 redundant places. [2024-06-04 15:43:31,174 INFO L231 Difference]: Finished difference. Result has 276 places, 320 transitions, 4259 flow [2024-06-04 15:43:31,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4099, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4259, PETRI_PLACES=276, PETRI_TRANSITIONS=320} [2024-06-04 15:43:31,175 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 234 predicate places. [2024-06-04 15:43:31,175 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 320 transitions, 4259 flow [2024-06-04 15:43:31,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:31,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:43:31,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:43:31,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-04 15:43:31,175 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:43:31,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:43:31,176 INFO L85 PathProgramCache]: Analyzing trace with hash 20992242, now seen corresponding path program 7 times [2024-06-04 15:43:31,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:43:31,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255426128] [2024-06-04 15:43:31,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:43:31,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:43:31,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:43:32,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:43:32,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:43:32,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255426128] [2024-06-04 15:43:32,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255426128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:43:32,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:43:32,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:43:32,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790423953] [2024-06-04 15:43:32,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:43:32,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:43:32,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:43:32,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:43:32,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:43:32,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:43:32,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 320 transitions, 4259 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:32,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:43:32,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:43:32,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:43:34,099 INFO L124 PetriNetUnfolderBase]: 3477/5424 cut-off events. [2024-06-04 15:43:34,099 INFO L125 PetriNetUnfolderBase]: For 428404/428431 co-relation queries the response was YES. [2024-06-04 15:43:34,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42727 conditions, 5424 events. 3477/5424 cut-off events. For 428404/428431 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 30561 event pairs, 774 based on Foata normal form. 22/5432 useless extension candidates. Maximal degree in co-relation 42592. Up to 4942 conditions per place. [2024-06-04 15:43:34,168 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 289 selfloop transitions, 67 changer transitions 0/359 dead transitions. [2024-06-04 15:43:34,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 359 transitions, 5126 flow [2024-06-04 15:43:34,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:43:34,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:43:34,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-04 15:43:34,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-04 15:43:34,170 INFO L175 Difference]: Start difference. First operand has 276 places, 320 transitions, 4259 flow. Second operand 10 states and 164 transitions. [2024-06-04 15:43:34,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 359 transitions, 5126 flow [2024-06-04 15:43:35,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 359 transitions, 5002 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-04 15:43:35,236 INFO L231 Difference]: Finished difference. Result has 281 places, 321 transitions, 4308 flow [2024-06-04 15:43:35,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4135, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4308, PETRI_PLACES=281, PETRI_TRANSITIONS=321} [2024-06-04 15:43:35,236 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 239 predicate places. [2024-06-04 15:43:35,237 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 321 transitions, 4308 flow [2024-06-04 15:43:35,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:35,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:43:35,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:43:35,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-04 15:43:35,237 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:43:35,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:43:35,237 INFO L85 PathProgramCache]: Analyzing trace with hash 20876922, now seen corresponding path program 8 times [2024-06-04 15:43:35,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:43:35,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324882117] [2024-06-04 15:43:35,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:43:35,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:43:35,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:43:36,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:43:36,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:43:36,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324882117] [2024-06-04 15:43:36,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324882117] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:43:36,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:43:36,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:43:36,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716914433] [2024-06-04 15:43:36,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:43:36,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:43:36,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:43:36,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:43:36,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:43:36,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:43:36,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 321 transitions, 4308 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 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) [2024-06-04 15:43:36,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:43:36,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:43:36,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:43:37,716 INFO L124 PetriNetUnfolderBase]: 3457/5392 cut-off events. [2024-06-04 15:43:37,716 INFO L125 PetriNetUnfolderBase]: For 420988/421015 co-relation queries the response was YES. [2024-06-04 15:43:37,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42102 conditions, 5392 events. 3457/5392 cut-off events. For 420988/421015 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 30434 event pairs, 743 based on Foata normal form. 22/5400 useless extension candidates. Maximal degree in co-relation 41966. Up to 4833 conditions per place. [2024-06-04 15:43:37,779 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 282 selfloop transitions, 71 changer transitions 0/356 dead transitions. [2024-06-04 15:43:37,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 356 transitions, 5142 flow [2024-06-04 15:43:37,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:43:37,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:43:37,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-04 15:43:37,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4065040650406504 [2024-06-04 15:43:37,780 INFO L175 Difference]: Start difference. First operand has 281 places, 321 transitions, 4308 flow. Second operand 9 states and 150 transitions. [2024-06-04 15:43:37,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 356 transitions, 5142 flow [2024-06-04 15:43:38,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 356 transitions, 4984 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-04 15:43:38,752 INFO L231 Difference]: Finished difference. Result has 283 places, 322 transitions, 4330 flow [2024-06-04 15:43:38,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4150, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4330, PETRI_PLACES=283, PETRI_TRANSITIONS=322} [2024-06-04 15:43:38,752 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 241 predicate places. [2024-06-04 15:43:38,752 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 322 transitions, 4330 flow [2024-06-04 15:43:38,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 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) [2024-06-04 15:43:38,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:43:38,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:43:38,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-04 15:43:38,753 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:43:38,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:43:38,754 INFO L85 PathProgramCache]: Analyzing trace with hash 191694672, now seen corresponding path program 9 times [2024-06-04 15:43:38,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:43:38,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198977386] [2024-06-04 15:43:38,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:43:38,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:43:38,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:43:40,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:43:40,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:43:40,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198977386] [2024-06-04 15:43:40,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198977386] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:43:40,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:43:40,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:43:40,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538525151] [2024-06-04 15:43:40,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:43:40,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:43:40,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:43:40,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:43:40,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:43:40,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:43:40,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 322 transitions, 4330 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:40,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:43:40,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:43:40,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:43:41,413 INFO L124 PetriNetUnfolderBase]: 3437/5360 cut-off events. [2024-06-04 15:43:41,413 INFO L125 PetriNetUnfolderBase]: For 410251/410278 co-relation queries the response was YES. [2024-06-04 15:43:41,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41392 conditions, 5360 events. 3437/5360 cut-off events. For 410251/410278 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 30142 event pairs, 746 based on Foata normal form. 22/5368 useless extension candidates. Maximal degree in co-relation 41254. Up to 4878 conditions per place. [2024-06-04 15:43:41,473 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 292 selfloop transitions, 66 changer transitions 0/361 dead transitions. [2024-06-04 15:43:41,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 361 transitions, 5174 flow [2024-06-04 15:43:41,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:43:41,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:43:41,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-04 15:43:41,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40487804878048783 [2024-06-04 15:43:41,475 INFO L175 Difference]: Start difference. First operand has 283 places, 322 transitions, 4330 flow. Second operand 10 states and 166 transitions. [2024-06-04 15:43:41,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 361 transitions, 5174 flow [2024-06-04 15:43:42,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 361 transitions, 4811 flow, removed 37 selfloop flow, removed 11 redundant places. [2024-06-04 15:43:42,810 INFO L231 Difference]: Finished difference. Result has 282 places, 322 transitions, 4105 flow [2024-06-04 15:43:42,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3967, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4105, PETRI_PLACES=282, PETRI_TRANSITIONS=322} [2024-06-04 15:43:42,811 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 240 predicate places. [2024-06-04 15:43:42,811 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 322 transitions, 4105 flow [2024-06-04 15:43:42,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:42,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:43:42,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:43:42,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-04 15:43:42,811 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:43:42,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:43:42,811 INFO L85 PathProgramCache]: Analyzing trace with hash 926764732, now seen corresponding path program 10 times [2024-06-04 15:43:42,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:43:42,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731333582] [2024-06-04 15:43:42,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:43:42,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:43:42,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:43:44,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:43:44,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:43:44,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731333582] [2024-06-04 15:43:44,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731333582] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:43:44,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:43:44,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:43:44,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652908592] [2024-06-04 15:43:44,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:43:44,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:43:44,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:43:44,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:43:44,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:43:44,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:43:44,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 322 transitions, 4105 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 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) [2024-06-04 15:43:44,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:43:44,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:43:44,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:43:45,635 INFO L124 PetriNetUnfolderBase]: 3417/5328 cut-off events. [2024-06-04 15:43:45,635 INFO L125 PetriNetUnfolderBase]: For 396199/396226 co-relation queries the response was YES. [2024-06-04 15:43:45,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39418 conditions, 5328 events. 3417/5328 cut-off events. For 396199/396226 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 29920 event pairs, 722 based on Foata normal form. 22/5336 useless extension candidates. Maximal degree in co-relation 39283. Up to 4846 conditions per place. [2024-06-04 15:43:45,698 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 283 selfloop transitions, 69 changer transitions 0/355 dead transitions. [2024-06-04 15:43:45,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 355 transitions, 4805 flow [2024-06-04 15:43:45,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:43:45,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:43:45,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-04 15:43:45,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4037940379403794 [2024-06-04 15:43:45,699 INFO L175 Difference]: Start difference. First operand has 282 places, 322 transitions, 4105 flow. Second operand 9 states and 149 transitions. [2024-06-04 15:43:45,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 355 transitions, 4805 flow [2024-06-04 15:43:46,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 355 transitions, 4637 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-04 15:43:46,752 INFO L231 Difference]: Finished difference. Result has 282 places, 321 transitions, 3963 flow [2024-06-04 15:43:46,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3821, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3963, PETRI_PLACES=282, PETRI_TRANSITIONS=321} [2024-06-04 15:43:46,753 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 240 predicate places. [2024-06-04 15:43:46,753 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 321 transitions, 3963 flow [2024-06-04 15:43:46,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 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) [2024-06-04 15:43:46,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:43:46,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:43:46,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-04 15:43:46,753 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:43:46,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:43:46,754 INFO L85 PathProgramCache]: Analyzing trace with hash 2084691438, now seen corresponding path program 4 times [2024-06-04 15:43:46,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:43:46,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707477931] [2024-06-04 15:43:46,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:43:46,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:43:46,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:43:47,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:43:47,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:43:47,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707477931] [2024-06-04 15:43:47,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707477931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:43:47,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:43:47,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:43:47,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852515615] [2024-06-04 15:43:47,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:43:47,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:43:47,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:43:47,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:43:47,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:43:47,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:43:47,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 321 transitions, 3963 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:47,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:43:47,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:43:47,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:43:48,859 INFO L124 PetriNetUnfolderBase]: 3437/5351 cut-off events. [2024-06-04 15:43:48,859 INFO L125 PetriNetUnfolderBase]: For 391283/391287 co-relation queries the response was YES. [2024-06-04 15:43:48,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39606 conditions, 5351 events. 3437/5351 cut-off events. For 391283/391287 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 30023 event pairs, 761 based on Foata normal form. 8/5356 useless extension candidates. Maximal degree in co-relation 39470. Up to 5058 conditions per place. [2024-06-04 15:43:48,915 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 265 selfloop transitions, 84 changer transitions 0/352 dead transitions. [2024-06-04 15:43:48,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 352 transitions, 4932 flow [2024-06-04 15:43:48,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:43:48,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:43:48,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-04 15:43:48,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43205574912891986 [2024-06-04 15:43:48,917 INFO L175 Difference]: Start difference. First operand has 282 places, 321 transitions, 3963 flow. Second operand 7 states and 124 transitions. [2024-06-04 15:43:48,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 352 transitions, 4932 flow [2024-06-04 15:43:49,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 352 transitions, 4779 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-04 15:43:49,895 INFO L231 Difference]: Finished difference. Result has 282 places, 324 transitions, 4044 flow [2024-06-04 15:43:49,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3810, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4044, PETRI_PLACES=282, PETRI_TRANSITIONS=324} [2024-06-04 15:43:49,895 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 240 predicate places. [2024-06-04 15:43:49,895 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 324 transitions, 4044 flow [2024-06-04 15:43:49,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:49,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:43:49,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:43:49,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-04 15:43:49,896 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:43:49,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:43:49,896 INFO L85 PathProgramCache]: Analyzing trace with hash 267647656, now seen corresponding path program 5 times [2024-06-04 15:43:49,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:43:49,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78347456] [2024-06-04 15:43:49,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:43:49,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:43:49,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:43:50,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:43:50,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:43:50,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78347456] [2024-06-04 15:43:50,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78347456] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:43:50,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:43:50,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:43:50,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722417405] [2024-06-04 15:43:50,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:43:50,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:43:50,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:43:50,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:43:50,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:43:50,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:43:50,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 324 transitions, 4044 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:50,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:43:50,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:43:50,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:43:51,929 INFO L124 PetriNetUnfolderBase]: 3457/5381 cut-off events. [2024-06-04 15:43:51,929 INFO L125 PetriNetUnfolderBase]: For 402357/402359 co-relation queries the response was YES. [2024-06-04 15:43:51,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39848 conditions, 5381 events. 3457/5381 cut-off events. For 402357/402359 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 30234 event pairs, 773 based on Foata normal form. 6/5384 useless extension candidates. Maximal degree in co-relation 39711. Up to 5074 conditions per place. [2024-06-04 15:43:52,138 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 262 selfloop transitions, 84 changer transitions 0/349 dead transitions. [2024-06-04 15:43:52,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 349 transitions, 4991 flow [2024-06-04 15:43:52,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:43:52,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:43:52,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 119 transitions. [2024-06-04 15:43:52,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2024-06-04 15:43:52,139 INFO L175 Difference]: Start difference. First operand has 282 places, 324 transitions, 4044 flow. Second operand 7 states and 119 transitions. [2024-06-04 15:43:52,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 349 transitions, 4991 flow [2024-06-04 15:43:53,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 349 transitions, 4842 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-04 15:43:53,187 INFO L231 Difference]: Finished difference. Result has 283 places, 327 transitions, 4126 flow [2024-06-04 15:43:53,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3902, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4126, PETRI_PLACES=283, PETRI_TRANSITIONS=327} [2024-06-04 15:43:53,187 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 241 predicate places. [2024-06-04 15:43:53,187 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 327 transitions, 4126 flow [2024-06-04 15:43:53,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:53,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:43:53,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:43:53,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-04 15:43:53,188 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:43:53,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:43:53,189 INFO L85 PathProgramCache]: Analyzing trace with hash 280534666, now seen corresponding path program 6 times [2024-06-04 15:43:53,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:43:53,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187858732] [2024-06-04 15:43:53,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:43:53,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:43:53,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:43:54,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:43:54,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:43:54,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187858732] [2024-06-04 15:43:54,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187858732] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:43:54,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:43:54,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:43:54,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33984990] [2024-06-04 15:43:54,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:43:54,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:43:54,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:43:54,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:43:54,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:43:54,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:43:54,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 327 transitions, 4126 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:54,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:43:54,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:43:54,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:43:55,177 INFO L124 PetriNetUnfolderBase]: 3445/5363 cut-off events. [2024-06-04 15:43:55,177 INFO L125 PetriNetUnfolderBase]: For 383064/383068 co-relation queries the response was YES. [2024-06-04 15:43:55,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39290 conditions, 5363 events. 3445/5363 cut-off events. For 383064/383068 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 30135 event pairs, 771 based on Foata normal form. 8/5368 useless extension candidates. Maximal degree in co-relation 39154. Up to 5172 conditions per place. [2024-06-04 15:43:55,243 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 279 selfloop transitions, 69 changer transitions 0/351 dead transitions. [2024-06-04 15:43:55,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 351 transitions, 4904 flow [2024-06-04 15:43:55,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:43:55,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:43:55,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 110 transitions. [2024-06-04 15:43:55,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44715447154471544 [2024-06-04 15:43:55,244 INFO L175 Difference]: Start difference. First operand has 283 places, 327 transitions, 4126 flow. Second operand 6 states and 110 transitions. [2024-06-04 15:43:55,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 351 transitions, 4904 flow [2024-06-04 15:43:55,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 351 transitions, 4746 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-04 15:43:55,920 INFO L231 Difference]: Finished difference. Result has 284 places, 327 transitions, 4156 flow [2024-06-04 15:43:55,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3968, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4156, PETRI_PLACES=284, PETRI_TRANSITIONS=327} [2024-06-04 15:43:55,920 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 242 predicate places. [2024-06-04 15:43:55,920 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 327 transitions, 4156 flow [2024-06-04 15:43:55,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:55,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:43:55,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:43:55,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-04 15:43:55,921 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:43:55,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:43:55,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1788920157, now seen corresponding path program 1 times [2024-06-04 15:43:55,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:43:55,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307814423] [2024-06-04 15:43:55,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:43:55,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:43:55,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:43:56,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:43:56,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:43:56,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307814423] [2024-06-04 15:43:56,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307814423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:43:56,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:43:56,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:43:56,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710150161] [2024-06-04 15:43:56,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:43:56,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:43:56,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:43:56,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:43:56,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:43:56,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-04 15:43:56,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 327 transitions, 4156 flow. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:56,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:43:56,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-04 15:43:56,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:43:57,916 INFO L124 PetriNetUnfolderBase]: 3347/5274 cut-off events. [2024-06-04 15:43:57,916 INFO L125 PetriNetUnfolderBase]: For 387394/387410 co-relation queries the response was YES. [2024-06-04 15:43:57,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38686 conditions, 5274 events. 3347/5274 cut-off events. For 387394/387410 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 30257 event pairs, 765 based on Foata normal form. 3/5270 useless extension candidates. Maximal degree in co-relation 38550. Up to 4980 conditions per place. [2024-06-04 15:43:57,979 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 283 selfloop transitions, 49 changer transitions 0/366 dead transitions. [2024-06-04 15:43:57,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 366 transitions, 5498 flow [2024-06-04 15:43:57,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:43:57,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:43:57,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-04 15:43:57,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42073170731707316 [2024-06-04 15:43:57,980 INFO L175 Difference]: Start difference. First operand has 284 places, 327 transitions, 4156 flow. Second operand 8 states and 138 transitions. [2024-06-04 15:43:57,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 366 transitions, 5498 flow [2024-06-04 15:43:58,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 366 transitions, 5296 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-04 15:43:58,897 INFO L231 Difference]: Finished difference. Result has 288 places, 339 transitions, 4301 flow [2024-06-04 15:43:58,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3954, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4301, PETRI_PLACES=288, PETRI_TRANSITIONS=339} [2024-06-04 15:43:58,898 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 246 predicate places. [2024-06-04 15:43:58,898 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 339 transitions, 4301 flow [2024-06-04 15:43:58,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:58,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:43:58,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:43:58,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-04 15:43:58,898 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:43:58,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:43:58,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1788829947, now seen corresponding path program 2 times [2024-06-04 15:43:58,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:43:58,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935140427] [2024-06-04 15:43:58,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:43:58,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:43:58,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:00,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:00,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:00,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935140427] [2024-06-04 15:44:00,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935140427] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:00,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:00,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:44:00,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268922484] [2024-06-04 15:44:00,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:00,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:44:00,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:00,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:44:00,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:44:00,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-04 15:44:00,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 339 transitions, 4301 flow. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:00,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:00,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-04 15:44:00,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:01,101 INFO L124 PetriNetUnfolderBase]: 3355/5286 cut-off events. [2024-06-04 15:44:01,101 INFO L125 PetriNetUnfolderBase]: For 397269/397285 co-relation queries the response was YES. [2024-06-04 15:44:01,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39446 conditions, 5286 events. 3355/5286 cut-off events. For 397269/397285 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 30338 event pairs, 765 based on Foata normal form. 2/5282 useless extension candidates. Maximal degree in co-relation 39307. Up to 5043 conditions per place. [2024-06-04 15:44:01,168 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 293 selfloop transitions, 36 changer transitions 0/363 dead transitions. [2024-06-04 15:44:01,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 363 transitions, 5071 flow [2024-06-04 15:44:01,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:44:01,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:44:01,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-04 15:44:01,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39634146341463417 [2024-06-04 15:44:01,170 INFO L175 Difference]: Start difference. First operand has 288 places, 339 transitions, 4301 flow. Second operand 8 states and 130 transitions. [2024-06-04 15:44:01,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 363 transitions, 5071 flow [2024-06-04 15:44:02,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 363 transitions, 4999 flow, removed 30 selfloop flow, removed 2 redundant places. [2024-06-04 15:44:02,052 INFO L231 Difference]: Finished difference. Result has 294 places, 342 transitions, 4359 flow [2024-06-04 15:44:02,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4237, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4359, PETRI_PLACES=294, PETRI_TRANSITIONS=342} [2024-06-04 15:44:02,053 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 252 predicate places. [2024-06-04 15:44:02,053 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 342 transitions, 4359 flow [2024-06-04 15:44:02,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:02,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:02,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:02,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-04 15:44:02,053 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:44:02,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:02,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1785110877, now seen corresponding path program 3 times [2024-06-04 15:44:02,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:02,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689194053] [2024-06-04 15:44:02,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:02,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:02,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:03,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:03,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:03,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689194053] [2024-06-04 15:44:03,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689194053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:03,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:03,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:44:03,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805012161] [2024-06-04 15:44:03,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:03,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:44:03,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:03,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:44:03,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:44:03,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-04 15:44:03,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 342 transitions, 4359 flow. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:03,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:03,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-04 15:44:03,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:04,242 INFO L124 PetriNetUnfolderBase]: 3368/5305 cut-off events. [2024-06-04 15:44:04,242 INFO L125 PetriNetUnfolderBase]: For 407821/407821 co-relation queries the response was YES. [2024-06-04 15:44:04,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39792 conditions, 5305 events. 3368/5305 cut-off events. For 407821/407821 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 30410 event pairs, 769 based on Foata normal form. 3/5302 useless extension candidates. Maximal degree in co-relation 39651. Up to 5078 conditions per place. [2024-06-04 15:44:04,307 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 297 selfloop transitions, 33 changer transitions 0/364 dead transitions. [2024-06-04 15:44:04,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 364 transitions, 5259 flow [2024-06-04 15:44:04,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:44:04,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:44:04,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 128 transitions. [2024-06-04 15:44:04,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3902439024390244 [2024-06-04 15:44:04,308 INFO L175 Difference]: Start difference. First operand has 294 places, 342 transitions, 4359 flow. Second operand 8 states and 128 transitions. [2024-06-04 15:44:04,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 364 transitions, 5259 flow [2024-06-04 15:44:05,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 364 transitions, 5165 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-04 15:44:05,286 INFO L231 Difference]: Finished difference. Result has 296 places, 345 transitions, 4387 flow [2024-06-04 15:44:05,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4265, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4387, PETRI_PLACES=296, PETRI_TRANSITIONS=345} [2024-06-04 15:44:05,287 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 254 predicate places. [2024-06-04 15:44:05,287 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 345 transitions, 4387 flow [2024-06-04 15:44:05,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:05,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:05,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:05,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-04 15:44:05,287 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:44:05,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:05,288 INFO L85 PathProgramCache]: Analyzing trace with hash 273361979, now seen corresponding path program 4 times [2024-06-04 15:44:05,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:05,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555066437] [2024-06-04 15:44:05,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:05,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:05,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:06,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:06,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:06,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555066437] [2024-06-04 15:44:06,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555066437] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:06,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:06,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:44:06,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573213013] [2024-06-04 15:44:06,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:06,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:44:06,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:06,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:44:06,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:44:06,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-04 15:44:06,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 345 transitions, 4387 flow. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:06,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:06,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-04 15:44:06,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:07,412 INFO L124 PetriNetUnfolderBase]: 3353/5286 cut-off events. [2024-06-04 15:44:07,412 INFO L125 PetriNetUnfolderBase]: For 411339/411339 co-relation queries the response was YES. [2024-06-04 15:44:07,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39571 conditions, 5286 events. 3353/5286 cut-off events. For 411339/411339 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 30394 event pairs, 768 based on Foata normal form. 3/5283 useless extension candidates. Maximal degree in co-relation 39429. Up to 5040 conditions per place. [2024-06-04 15:44:07,474 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 298 selfloop transitions, 37 changer transitions 0/369 dead transitions. [2024-06-04 15:44:07,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 369 transitions, 5411 flow [2024-06-04 15:44:07,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:44:07,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:44:07,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-04 15:44:07,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43205574912891986 [2024-06-04 15:44:07,475 INFO L175 Difference]: Start difference. First operand has 296 places, 345 transitions, 4387 flow. Second operand 7 states and 124 transitions. [2024-06-04 15:44:07,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 369 transitions, 5411 flow [2024-06-04 15:44:08,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 369 transitions, 5295 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-04 15:44:08,361 INFO L231 Difference]: Finished difference. Result has 297 places, 345 transitions, 4356 flow [2024-06-04 15:44:08,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4271, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4356, PETRI_PLACES=297, PETRI_TRANSITIONS=345} [2024-06-04 15:44:08,361 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 255 predicate places. [2024-06-04 15:44:08,361 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 345 transitions, 4356 flow [2024-06-04 15:44:08,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:08,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:08,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:08,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-04 15:44:08,362 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:44:08,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:08,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1082662301, now seen corresponding path program 1 times [2024-06-04 15:44:08,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:08,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381371838] [2024-06-04 15:44:08,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:08,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:08,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:09,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:09,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:09,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381371838] [2024-06-04 15:44:09,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381371838] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:09,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:09,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:44:09,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34153856] [2024-06-04 15:44:09,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:09,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:44:09,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:09,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:44:09,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:44:09,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:44:09,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 345 transitions, 4356 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:09,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:09,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:44:09,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:10,466 INFO L124 PetriNetUnfolderBase]: 3480/5417 cut-off events. [2024-06-04 15:44:10,466 INFO L125 PetriNetUnfolderBase]: For 414574/414574 co-relation queries the response was YES. [2024-06-04 15:44:10,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40436 conditions, 5417 events. 3480/5417 cut-off events. For 414574/414574 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 30528 event pairs, 805 based on Foata normal form. 1/5415 useless extension candidates. Maximal degree in co-relation 40293. Up to 5353 conditions per place. [2024-06-04 15:44:10,523 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 328 selfloop transitions, 26 changer transitions 0/357 dead transitions. [2024-06-04 15:44:10,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 357 transitions, 5102 flow [2024-06-04 15:44:10,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 15:44:10,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 15:44:10,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 86 transitions. [2024-06-04 15:44:10,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4195121951219512 [2024-06-04 15:44:10,525 INFO L175 Difference]: Start difference. First operand has 297 places, 345 transitions, 4356 flow. Second operand 5 states and 86 transitions. [2024-06-04 15:44:10,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 357 transitions, 5102 flow [2024-06-04 15:44:11,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 357 transitions, 4975 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-04 15:44:11,594 INFO L231 Difference]: Finished difference. Result has 296 places, 345 transitions, 4302 flow [2024-06-04 15:44:11,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4229, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4302, PETRI_PLACES=296, PETRI_TRANSITIONS=345} [2024-06-04 15:44:11,595 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 254 predicate places. [2024-06-04 15:44:11,595 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 345 transitions, 4302 flow [2024-06-04 15:44:11,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:11,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:11,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:11,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-04 15:44:11,595 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:44:11,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:11,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1976581107, now seen corresponding path program 1 times [2024-06-04 15:44:11,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:11,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293965080] [2024-06-04 15:44:11,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:11,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:11,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:12,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:12,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:12,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293965080] [2024-06-04 15:44:12,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293965080] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:12,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:12,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:44:12,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556655452] [2024-06-04 15:44:12,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:12,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:44:12,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:12,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:44:12,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:44:12,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:44:12,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 345 transitions, 4302 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:12,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:12,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:44:12,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:13,617 INFO L124 PetriNetUnfolderBase]: 3493/5431 cut-off events. [2024-06-04 15:44:13,617 INFO L125 PetriNetUnfolderBase]: For 428292/428296 co-relation queries the response was YES. [2024-06-04 15:44:13,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40806 conditions, 5431 events. 3493/5431 cut-off events. For 428292/428296 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 30602 event pairs, 774 based on Foata normal form. 5/5433 useless extension candidates. Maximal degree in co-relation 40662. Up to 5341 conditions per place. [2024-06-04 15:44:13,671 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 339 selfloop transitions, 34 changer transitions 0/376 dead transitions. [2024-06-04 15:44:13,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 376 transitions, 5444 flow [2024-06-04 15:44:13,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:44:13,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:44:13,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-06-04 15:44:13,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3871951219512195 [2024-06-04 15:44:13,673 INFO L175 Difference]: Start difference. First operand has 296 places, 345 transitions, 4302 flow. Second operand 8 states and 127 transitions. [2024-06-04 15:44:13,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 376 transitions, 5444 flow [2024-06-04 15:44:14,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 376 transitions, 5392 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-04 15:44:14,773 INFO L231 Difference]: Finished difference. Result has 300 places, 351 transitions, 4502 flow [2024-06-04 15:44:14,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4250, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4502, PETRI_PLACES=300, PETRI_TRANSITIONS=351} [2024-06-04 15:44:14,773 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 258 predicate places. [2024-06-04 15:44:14,774 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 351 transitions, 4502 flow [2024-06-04 15:44:14,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:14,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:14,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:14,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-04 15:44:14,774 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:44:14,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:14,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1120457665, now seen corresponding path program 1 times [2024-06-04 15:44:14,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:14,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446059338] [2024-06-04 15:44:14,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:14,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:14,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:15,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:15,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:15,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446059338] [2024-06-04 15:44:15,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446059338] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:15,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:15,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:44:15,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271688595] [2024-06-04 15:44:15,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:15,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:44:15,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:15,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:44:15,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:44:15,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:44:15,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 351 transitions, 4502 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:15,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:15,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:44:15,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:16,708 INFO L124 PetriNetUnfolderBase]: 3524/5474 cut-off events. [2024-06-04 15:44:16,709 INFO L125 PetriNetUnfolderBase]: For 450441/450445 co-relation queries the response was YES. [2024-06-04 15:44:16,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41768 conditions, 5474 events. 3524/5474 cut-off events. For 450441/450445 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 30862 event pairs, 762 based on Foata normal form. 6/5477 useless extension candidates. Maximal degree in co-relation 41623. Up to 5364 conditions per place. [2024-06-04 15:44:16,777 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 348 selfloop transitions, 40 changer transitions 0/391 dead transitions. [2024-06-04 15:44:16,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 391 transitions, 5732 flow [2024-06-04 15:44:16,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:44:16,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:44:16,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 128 transitions. [2024-06-04 15:44:16,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3902439024390244 [2024-06-04 15:44:16,778 INFO L175 Difference]: Start difference. First operand has 300 places, 351 transitions, 4502 flow. Second operand 8 states and 128 transitions. [2024-06-04 15:44:16,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 391 transitions, 5732 flow [2024-06-04 15:44:17,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 391 transitions, 5606 flow, removed 45 selfloop flow, removed 4 redundant places. [2024-06-04 15:44:17,987 INFO L231 Difference]: Finished difference. Result has 306 places, 367 transitions, 4738 flow [2024-06-04 15:44:17,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4379, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4738, PETRI_PLACES=306, PETRI_TRANSITIONS=367} [2024-06-04 15:44:17,988 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 264 predicate places. [2024-06-04 15:44:17,988 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 367 transitions, 4738 flow [2024-06-04 15:44:17,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:17,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:17,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:17,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-04 15:44:17,989 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:44:17,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:17,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1120457851, now seen corresponding path program 2 times [2024-06-04 15:44:17,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:17,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047820655] [2024-06-04 15:44:17,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:17,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:17,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:18,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:18,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:18,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047820655] [2024-06-04 15:44:18,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047820655] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:18,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:18,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:44:18,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830338964] [2024-06-04 15:44:18,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:18,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:44:18,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:18,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:44:18,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:44:18,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:44:18,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 367 transitions, 4738 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:18,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:18,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:44:18,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:20,175 INFO L124 PetriNetUnfolderBase]: 3529/5481 cut-off events. [2024-06-04 15:44:20,175 INFO L125 PetriNetUnfolderBase]: For 461504/461508 co-relation queries the response was YES. [2024-06-04 15:44:20,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42468 conditions, 5481 events. 3529/5481 cut-off events. For 461504/461508 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 30955 event pairs, 763 based on Foata normal form. 5/5483 useless extension candidates. Maximal degree in co-relation 42319. Up to 5403 conditions per place. [2024-06-04 15:44:20,248 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 356 selfloop transitions, 32 changer transitions 0/391 dead transitions. [2024-06-04 15:44:20,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 391 transitions, 5664 flow [2024-06-04 15:44:20,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:44:20,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:44:20,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 122 transitions. [2024-06-04 15:44:20,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3719512195121951 [2024-06-04 15:44:20,249 INFO L175 Difference]: Start difference. First operand has 306 places, 367 transitions, 4738 flow. Second operand 8 states and 122 transitions. [2024-06-04 15:44:20,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 391 transitions, 5664 flow [2024-06-04 15:44:21,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 391 transitions, 5578 flow, removed 38 selfloop flow, removed 2 redundant places. [2024-06-04 15:44:21,339 INFO L231 Difference]: Finished difference. Result has 312 places, 370 transitions, 4810 flow [2024-06-04 15:44:21,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4652, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4810, PETRI_PLACES=312, PETRI_TRANSITIONS=370} [2024-06-04 15:44:21,339 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 270 predicate places. [2024-06-04 15:44:21,339 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 370 transitions, 4810 flow [2024-06-04 15:44:21,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:21,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:21,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:21,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-04 15:44:21,340 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:44:21,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:21,340 INFO L85 PathProgramCache]: Analyzing trace with hash -943088995, now seen corresponding path program 2 times [2024-06-04 15:44:21,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:21,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529007913] [2024-06-04 15:44:21,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:21,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:21,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:22,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:22,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:22,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529007913] [2024-06-04 15:44:22,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529007913] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:22,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:22,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:44:22,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194946346] [2024-06-04 15:44:22,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:22,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:44:22,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:22,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:44:22,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:44:22,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:44:22,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 370 transitions, 4810 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:22,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:22,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:44:22,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:23,343 INFO L124 PetriNetUnfolderBase]: 3539/5495 cut-off events. [2024-06-04 15:44:23,343 INFO L125 PetriNetUnfolderBase]: For 475976/475980 co-relation queries the response was YES. [2024-06-04 15:44:23,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42722 conditions, 5495 events. 3539/5495 cut-off events. For 475976/475980 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 31011 event pairs, 765 based on Foata normal form. 6/5498 useless extension candidates. Maximal degree in co-relation 42571. Up to 5424 conditions per place. [2024-06-04 15:44:23,417 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 357 selfloop transitions, 33 changer transitions 0/393 dead transitions. [2024-06-04 15:44:23,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 393 transitions, 5717 flow [2024-06-04 15:44:23,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:44:23,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:44:23,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 121 transitions. [2024-06-04 15:44:23,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36890243902439024 [2024-06-04 15:44:23,418 INFO L175 Difference]: Start difference. First operand has 312 places, 370 transitions, 4810 flow. Second operand 8 states and 121 transitions. [2024-06-04 15:44:23,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 393 transitions, 5717 flow [2024-06-04 15:44:24,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 393 transitions, 5579 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-04 15:44:24,653 INFO L231 Difference]: Finished difference. Result has 313 places, 374 transitions, 4813 flow [2024-06-04 15:44:24,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4672, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4813, PETRI_PLACES=313, PETRI_TRANSITIONS=374} [2024-06-04 15:44:24,653 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 271 predicate places. [2024-06-04 15:44:24,653 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 374 transitions, 4813 flow [2024-06-04 15:44:24,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:24,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:24,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:24,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-04 15:44:24,654 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:44:24,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:24,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1737116809, now seen corresponding path program 3 times [2024-06-04 15:44:24,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:24,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812642426] [2024-06-04 15:44:24,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:24,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:24,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:25,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:25,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:25,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812642426] [2024-06-04 15:44:25,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812642426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:25,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:25,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:44:25,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051666868] [2024-06-04 15:44:25,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:25,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:44:25,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:25,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:44:25,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:44:25,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:44:25,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 374 transitions, 4813 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:25,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:25,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:44:25,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:26,820 INFO L124 PetriNetUnfolderBase]: 3549/5509 cut-off events. [2024-06-04 15:44:26,820 INFO L125 PetriNetUnfolderBase]: For 484690/484694 co-relation queries the response was YES. [2024-06-04 15:44:26,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42977 conditions, 5509 events. 3549/5509 cut-off events. For 484690/484694 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 31113 event pairs, 762 based on Foata normal form. 5/5511 useless extension candidates. Maximal degree in co-relation 42826. Up to 5450 conditions per place. [2024-06-04 15:44:26,883 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 368 selfloop transitions, 27 changer transitions 0/398 dead transitions. [2024-06-04 15:44:26,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 398 transitions, 5785 flow [2024-06-04 15:44:26,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:44:26,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:44:26,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 118 transitions. [2024-06-04 15:44:26,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3597560975609756 [2024-06-04 15:44:26,885 INFO L175 Difference]: Start difference. First operand has 313 places, 374 transitions, 4813 flow. Second operand 8 states and 118 transitions. [2024-06-04 15:44:26,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 398 transitions, 5785 flow [2024-06-04 15:44:28,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 398 transitions, 5676 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-04 15:44:28,088 INFO L231 Difference]: Finished difference. Result has 317 places, 380 transitions, 4905 flow [2024-06-04 15:44:28,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4704, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4905, PETRI_PLACES=317, PETRI_TRANSITIONS=380} [2024-06-04 15:44:28,089 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 275 predicate places. [2024-06-04 15:44:28,089 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 380 transitions, 4905 flow [2024-06-04 15:44:28,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:28,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:28,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:28,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-04 15:44:28,090 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:44:28,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:28,090 INFO L85 PathProgramCache]: Analyzing trace with hash -943326145, now seen corresponding path program 3 times [2024-06-04 15:44:28,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:28,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313281733] [2024-06-04 15:44:28,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:28,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:28,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:28,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:28,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:28,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313281733] [2024-06-04 15:44:28,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313281733] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:28,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:28,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:44:28,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943188663] [2024-06-04 15:44:28,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:28,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:44:28,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:28,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:44:28,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:44:28,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:44:28,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 380 transitions, 4905 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:28,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:28,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:44:28,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:30,057 INFO L124 PetriNetUnfolderBase]: 3559/5523 cut-off events. [2024-06-04 15:44:30,057 INFO L125 PetriNetUnfolderBase]: For 496309/496313 co-relation queries the response was YES. [2024-06-04 15:44:30,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43200 conditions, 5523 events. 3559/5523 cut-off events. For 496309/496313 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 31070 event pairs, 765 based on Foata normal form. 6/5526 useless extension candidates. Maximal degree in co-relation 43047. Up to 5441 conditions per place. [2024-06-04 15:44:30,132 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 363 selfloop transitions, 37 changer transitions 0/403 dead transitions. [2024-06-04 15:44:30,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 403 transitions, 5839 flow [2024-06-04 15:44:30,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:44:30,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:44:30,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 124 transitions. [2024-06-04 15:44:30,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3780487804878049 [2024-06-04 15:44:30,134 INFO L175 Difference]: Start difference. First operand has 317 places, 380 transitions, 4905 flow. Second operand 8 states and 124 transitions. [2024-06-04 15:44:30,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 403 transitions, 5839 flow [2024-06-04 15:44:31,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 403 transitions, 5700 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-04 15:44:31,692 INFO L231 Difference]: Finished difference. Result has 319 places, 383 transitions, 4916 flow [2024-06-04 15:44:31,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4766, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4916, PETRI_PLACES=319, PETRI_TRANSITIONS=383} [2024-06-04 15:44:31,693 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 277 predicate places. [2024-06-04 15:44:31,693 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 383 transitions, 4916 flow [2024-06-04 15:44:31,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:31,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:31,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:31,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-04 15:44:31,693 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:44:31,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:31,693 INFO L85 PathProgramCache]: Analyzing trace with hash -943080067, now seen corresponding path program 1 times [2024-06-04 15:44:31,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:31,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868150405] [2024-06-04 15:44:31,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:31,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:31,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:32,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:32,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:32,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868150405] [2024-06-04 15:44:32,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868150405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:32,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:32,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:44:32,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322266855] [2024-06-04 15:44:32,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:32,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:44:32,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:32,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:44:32,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:44:32,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:44:32,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 383 transitions, 4916 flow. Second operand has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:32,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:32,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:44:32,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:34,186 INFO L124 PetriNetUnfolderBase]: 3567/5535 cut-off events. [2024-06-04 15:44:34,186 INFO L125 PetriNetUnfolderBase]: For 508214/508218 co-relation queries the response was YES. [2024-06-04 15:44:34,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43425 conditions, 5535 events. 3567/5535 cut-off events. For 508214/508218 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 31183 event pairs, 766 based on Foata normal form. 6/5538 useless extension candidates. Maximal degree in co-relation 43272. Up to 5450 conditions per place. [2024-06-04 15:44:34,263 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 360 selfloop transitions, 41 changer transitions 0/404 dead transitions. [2024-06-04 15:44:34,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 404 transitions, 5822 flow [2024-06-04 15:44:34,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:44:34,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:44:34,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 123 transitions. [2024-06-04 15:44:34,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 15:44:34,265 INFO L175 Difference]: Start difference. First operand has 319 places, 383 transitions, 4916 flow. Second operand 8 states and 123 transitions. [2024-06-04 15:44:34,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 404 transitions, 5822 flow [2024-06-04 15:44:35,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 404 transitions, 5700 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-04 15:44:35,744 INFO L231 Difference]: Finished difference. Result has 321 places, 385 transitions, 4929 flow [2024-06-04 15:44:35,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4794, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4929, PETRI_PLACES=321, PETRI_TRANSITIONS=385} [2024-06-04 15:44:35,745 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 279 predicate places. [2024-06-04 15:44:35,745 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 385 transitions, 4929 flow [2024-06-04 15:44:35,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:35,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:35,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:35,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-04 15:44:35,745 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:44:35,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:35,746 INFO L85 PathProgramCache]: Analyzing trace with hash 369410935, now seen corresponding path program 4 times [2024-06-04 15:44:35,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:35,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519941322] [2024-06-04 15:44:35,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:35,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:35,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:36,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:36,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:36,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519941322] [2024-06-04 15:44:36,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519941322] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:36,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:36,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:44:36,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861884492] [2024-06-04 15:44:36,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:36,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:44:36,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:36,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:44:36,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:44:36,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:44:36,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 385 transitions, 4929 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:36,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:36,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:44:36,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:37,825 INFO L124 PetriNetUnfolderBase]: 3580/5555 cut-off events. [2024-06-04 15:44:37,826 INFO L125 PetriNetUnfolderBase]: For 523157/523193 co-relation queries the response was YES. [2024-06-04 15:44:37,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43956 conditions, 5555 events. 3580/5555 cut-off events. For 523157/523193 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 31302 event pairs, 770 based on Foata normal form. 25/5573 useless extension candidates. Maximal degree in co-relation 43802. Up to 5371 conditions per place. [2024-06-04 15:44:37,901 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 347 selfloop transitions, 74 changer transitions 0/424 dead transitions. [2024-06-04 15:44:37,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 424 transitions, 6506 flow [2024-06-04 15:44:37,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:44:37,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:44:37,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 128 transitions. [2024-06-04 15:44:37,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3902439024390244 [2024-06-04 15:44:37,902 INFO L175 Difference]: Start difference. First operand has 321 places, 385 transitions, 4929 flow. Second operand 8 states and 128 transitions. [2024-06-04 15:44:37,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 424 transitions, 6506 flow [2024-06-04 15:44:39,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 424 transitions, 6387 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-04 15:44:39,323 INFO L231 Difference]: Finished difference. Result has 324 places, 400 transitions, 5361 flow [2024-06-04 15:44:39,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4810, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5361, PETRI_PLACES=324, PETRI_TRANSITIONS=400} [2024-06-04 15:44:39,323 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 282 predicate places. [2024-06-04 15:44:39,323 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 400 transitions, 5361 flow [2024-06-04 15:44:39,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:39,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:39,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:39,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-04 15:44:39,324 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:44:39,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:39,325 INFO L85 PathProgramCache]: Analyzing trace with hash 380838775, now seen corresponding path program 5 times [2024-06-04 15:44:39,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:39,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133756835] [2024-06-04 15:44:39,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:39,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:39,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:40,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:40,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:40,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133756835] [2024-06-04 15:44:40,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133756835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:40,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:40,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:44:40,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126843437] [2024-06-04 15:44:40,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:40,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:44:40,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:40,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:44:40,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:44:40,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:44:40,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 400 transitions, 5361 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:40,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:40,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:44:40,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:41,421 INFO L124 PetriNetUnfolderBase]: 3593/5573 cut-off events. [2024-06-04 15:44:41,422 INFO L125 PetriNetUnfolderBase]: For 541968/542004 co-relation queries the response was YES. [2024-06-04 15:44:41,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44848 conditions, 5573 events. 3593/5573 cut-off events. For 541968/542004 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 31404 event pairs, 766 based on Foata normal form. 25/5591 useless extension candidates. Maximal degree in co-relation 44692. Up to 5386 conditions per place. [2024-06-04 15:44:41,488 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 344 selfloop transitions, 80 changer transitions 0/427 dead transitions. [2024-06-04 15:44:41,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 427 transitions, 6802 flow [2024-06-04 15:44:41,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:44:41,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:44:41,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 125 transitions. [2024-06-04 15:44:41,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38109756097560976 [2024-06-04 15:44:41,489 INFO L175 Difference]: Start difference. First operand has 324 places, 400 transitions, 5361 flow. Second operand 8 states and 125 transitions. [2024-06-04 15:44:41,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 427 transitions, 6802 flow [2024-06-04 15:44:43,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 427 transitions, 6582 flow, removed 72 selfloop flow, removed 4 redundant places. [2024-06-04 15:44:43,217 INFO L231 Difference]: Finished difference. Result has 328 places, 406 transitions, 5514 flow [2024-06-04 15:44:43,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5167, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5514, PETRI_PLACES=328, PETRI_TRANSITIONS=406} [2024-06-04 15:44:43,218 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 286 predicate places. [2024-06-04 15:44:43,218 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 406 transitions, 5514 flow [2024-06-04 15:44:43,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:43,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:43,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:43,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-04 15:44:43,218 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:44:43,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:43,218 INFO L85 PathProgramCache]: Analyzing trace with hash 141509785, now seen corresponding path program 6 times [2024-06-04 15:44:43,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:43,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543308649] [2024-06-04 15:44:43,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:43,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:43,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:44,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:44,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:44,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543308649] [2024-06-04 15:44:44,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543308649] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:44,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:44,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:44:44,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553398156] [2024-06-04 15:44:44,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:44,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:44:44,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:44,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:44:44,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:44:44,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:44:44,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 406 transitions, 5514 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:44,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:44,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:44:44,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:45,253 INFO L124 PetriNetUnfolderBase]: 3590/5569 cut-off events. [2024-06-04 15:44:45,253 INFO L125 PetriNetUnfolderBase]: For 549329/549365 co-relation queries the response was YES. [2024-06-04 15:44:45,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44753 conditions, 5569 events. 3590/5569 cut-off events. For 549329/549365 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 31370 event pairs, 764 based on Foata normal form. 25/5587 useless extension candidates. Maximal degree in co-relation 44596. Up to 5383 conditions per place. [2024-06-04 15:44:45,329 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 352 selfloop transitions, 78 changer transitions 0/433 dead transitions. [2024-06-04 15:44:45,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 433 transitions, 6992 flow [2024-06-04 15:44:45,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:44:45,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:44:45,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-04 15:44:45,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39634146341463417 [2024-06-04 15:44:45,330 INFO L175 Difference]: Start difference. First operand has 328 places, 406 transitions, 5514 flow. Second operand 8 states and 130 transitions. [2024-06-04 15:44:45,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 433 transitions, 6992 flow [2024-06-04 15:44:47,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 433 transitions, 6724 flow, removed 81 selfloop flow, removed 4 redundant places. [2024-06-04 15:44:47,332 INFO L231 Difference]: Finished difference. Result has 332 places, 408 transitions, 5462 flow [2024-06-04 15:44:47,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5266, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5462, PETRI_PLACES=332, PETRI_TRANSITIONS=408} [2024-06-04 15:44:47,333 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 290 predicate places. [2024-06-04 15:44:47,333 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 408 transitions, 5462 flow [2024-06-04 15:44:47,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:47,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:47,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:47,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-04 15:44:47,334 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:44:47,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:47,334 INFO L85 PathProgramCache]: Analyzing trace with hash 483928531, now seen corresponding path program 4 times [2024-06-04 15:44:47,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:47,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377570301] [2024-06-04 15:44:47,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:47,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:47,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:48,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:48,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:48,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377570301] [2024-06-04 15:44:48,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377570301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:48,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:48,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:44:48,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001942924] [2024-06-04 15:44:48,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:48,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:44:48,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:48,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:44:48,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:44:48,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:44:48,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 408 transitions, 5462 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:48,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:48,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:44:48,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:49,389 INFO L124 PetriNetUnfolderBase]: 3613/5601 cut-off events. [2024-06-04 15:44:49,389 INFO L125 PetriNetUnfolderBase]: For 568935/568971 co-relation queries the response was YES. [2024-06-04 15:44:49,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45182 conditions, 5601 events. 3613/5601 cut-off events. For 568935/568971 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 31620 event pairs, 767 based on Foata normal form. 26/5620 useless extension candidates. Maximal degree in co-relation 45024. Up to 5409 conditions per place. [2024-06-04 15:44:49,465 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 368 selfloop transitions, 70 changer transitions 0/441 dead transitions. [2024-06-04 15:44:49,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 441 transitions, 6927 flow [2024-06-04 15:44:49,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:44:49,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:44:49,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2024-06-04 15:44:49,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932926829268293 [2024-06-04 15:44:49,466 INFO L175 Difference]: Start difference. First operand has 332 places, 408 transitions, 5462 flow. Second operand 8 states and 129 transitions. [2024-06-04 15:44:49,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 441 transitions, 6927 flow [2024-06-04 15:44:51,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 441 transitions, 6800 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-04 15:44:51,552 INFO L231 Difference]: Finished difference. Result has 337 places, 417 transitions, 5670 flow [2024-06-04 15:44:51,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5340, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5670, PETRI_PLACES=337, PETRI_TRANSITIONS=417} [2024-06-04 15:44:51,553 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 295 predicate places. [2024-06-04 15:44:51,553 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 417 transitions, 5670 flow [2024-06-04 15:44:51,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:51,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:51,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:51,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-04 15:44:51,554 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:44:51,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:51,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1529398855, now seen corresponding path program 7 times [2024-06-04 15:44:51,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:51,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325491247] [2024-06-04 15:44:51,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:51,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:51,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:52,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:52,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:52,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325491247] [2024-06-04 15:44:52,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325491247] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:52,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:52,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:44:52,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121747775] [2024-06-04 15:44:52,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:52,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:44:52,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:52,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:44:52,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:44:52,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:44:52,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 417 transitions, 5670 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:52,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:52,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:44:52,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:53,662 INFO L124 PetriNetUnfolderBase]: 3618/5608 cut-off events. [2024-06-04 15:44:53,663 INFO L125 PetriNetUnfolderBase]: For 580686/580722 co-relation queries the response was YES. [2024-06-04 15:44:53,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45678 conditions, 5608 events. 3618/5608 cut-off events. For 580686/580722 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 31622 event pairs, 769 based on Foata normal form. 25/5626 useless extension candidates. Maximal degree in co-relation 45518. Up to 5495 conditions per place. [2024-06-04 15:44:53,747 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 388 selfloop transitions, 48 changer transitions 0/439 dead transitions. [2024-06-04 15:44:53,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 439 transitions, 6697 flow [2024-06-04 15:44:53,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:44:53,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:44:53,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 121 transitions. [2024-06-04 15:44:53,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36890243902439024 [2024-06-04 15:44:53,748 INFO L175 Difference]: Start difference. First operand has 337 places, 417 transitions, 5670 flow. Second operand 8 states and 121 transitions. [2024-06-04 15:44:53,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 439 transitions, 6697 flow [2024-06-04 15:44:55,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 439 transitions, 6494 flow, removed 50 selfloop flow, removed 4 redundant places. [2024-06-04 15:44:55,885 INFO L231 Difference]: Finished difference. Result has 341 places, 420 transitions, 5668 flow [2024-06-04 15:44:55,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5467, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5668, PETRI_PLACES=341, PETRI_TRANSITIONS=420} [2024-06-04 15:44:55,885 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 299 predicate places. [2024-06-04 15:44:55,885 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 420 transitions, 5668 flow [2024-06-04 15:44:55,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:55,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:55,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:55,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-04 15:44:55,886 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:44:55,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:55,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1609385315, now seen corresponding path program 8 times [2024-06-04 15:44:55,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:55,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373684539] [2024-06-04 15:44:55,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:55,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:55,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:56,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:56,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:56,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373684539] [2024-06-04 15:44:56,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373684539] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:56,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:56,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:44:56,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432358732] [2024-06-04 15:44:56,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:56,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:44:56,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:56,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:44:56,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:44:56,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:44:56,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 420 transitions, 5668 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:56,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:56,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:44:56,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:58,137 INFO L124 PetriNetUnfolderBase]: 3636/5633 cut-off events. [2024-06-04 15:44:58,137 INFO L125 PetriNetUnfolderBase]: For 594930/594966 co-relation queries the response was YES. [2024-06-04 15:44:58,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45816 conditions, 5633 events. 3636/5633 cut-off events. For 594930/594966 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 31788 event pairs, 769 based on Foata normal form. 25/5651 useless extension candidates. Maximal degree in co-relation 45655. Up to 5506 conditions per place. [2024-06-04 15:44:58,210 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 383 selfloop transitions, 64 changer transitions 0/450 dead transitions. [2024-06-04 15:44:58,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 450 transitions, 7047 flow [2024-06-04 15:44:58,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:44:58,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:44:58,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 142 transitions. [2024-06-04 15:44:58,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3463414634146341 [2024-06-04 15:44:58,212 INFO L175 Difference]: Start difference. First operand has 341 places, 420 transitions, 5668 flow. Second operand 10 states and 142 transitions. [2024-06-04 15:44:58,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 450 transitions, 7047 flow [2024-06-04 15:45:00,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 450 transitions, 6865 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-04 15:45:00,289 INFO L231 Difference]: Finished difference. Result has 346 places, 431 transitions, 5909 flow [2024-06-04 15:45:00,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5496, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5909, PETRI_PLACES=346, PETRI_TRANSITIONS=431} [2024-06-04 15:45:00,290 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 304 predicate places. [2024-06-04 15:45:00,290 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 431 transitions, 5909 flow [2024-06-04 15:45:00,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:45:00,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:45:00,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:45:00,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-04 15:45:00,290 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:45:00,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:45:00,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1953471551, now seen corresponding path program 5 times [2024-06-04 15:45:00,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:45:00,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312531052] [2024-06-04 15:45:00,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:45:00,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:45:00,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:45:01,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:45:01,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:45:01,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312531052] [2024-06-04 15:45:01,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312531052] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:45:01,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:45:01,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:45:01,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529029635] [2024-06-04 15:45:01,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:45:01,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:45:01,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:45:01,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:45:01,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:45:01,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:45:01,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 431 transitions, 5909 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:45:01,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:45:01,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:45:01,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:45:02,546 INFO L124 PetriNetUnfolderBase]: 3662/5669 cut-off events. [2024-06-04 15:45:02,547 INFO L125 PetriNetUnfolderBase]: For 619329/619365 co-relation queries the response was YES. [2024-06-04 15:45:02,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46469 conditions, 5669 events. 3662/5669 cut-off events. For 619329/619365 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 31973 event pairs, 767 based on Foata normal form. 26/5688 useless extension candidates. Maximal degree in co-relation 46306. Up to 5463 conditions per place. [2024-06-04 15:45:02,613 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 379 selfloop transitions, 77 changer transitions 0/459 dead transitions. [2024-06-04 15:45:02,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 459 transitions, 7357 flow [2024-06-04 15:45:02,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:45:02,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:45:02,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 128 transitions. [2024-06-04 15:45:02,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3902439024390244 [2024-06-04 15:45:02,614 INFO L175 Difference]: Start difference. First operand has 346 places, 431 transitions, 5909 flow. Second operand 8 states and 128 transitions. [2024-06-04 15:45:02,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 459 transitions, 7357 flow [2024-06-04 15:45:04,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 459 transitions, 7181 flow, removed 55 selfloop flow, removed 3 redundant places. [2024-06-04 15:45:04,691 INFO L231 Difference]: Finished difference. Result has 351 places, 437 transitions, 6009 flow [2024-06-04 15:45:04,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5733, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6009, PETRI_PLACES=351, PETRI_TRANSITIONS=437} [2024-06-04 15:45:04,692 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 309 predicate places. [2024-06-04 15:45:04,692 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 437 transitions, 6009 flow [2024-06-04 15:45:04,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:45:04,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:45:04,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:45:04,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-04 15:45:04,692 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:45:04,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:45:04,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1953708515, now seen corresponding path program 9 times [2024-06-04 15:45:04,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:45:04,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530217098] [2024-06-04 15:45:04,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:45:04,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:45:04,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:45:05,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:45:05,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:45:05,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530217098] [2024-06-04 15:45:05,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530217098] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:45:05,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:45:05,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:45:05,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827873946] [2024-06-04 15:45:05,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:45:05,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:45:05,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:45:05,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:45:05,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:45:05,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:45:05,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 437 transitions, 6009 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:45:05,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:45:05,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:45:05,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:45:06,826 INFO L124 PetriNetUnfolderBase]: 3659/5665 cut-off events. [2024-06-04 15:45:06,826 INFO L125 PetriNetUnfolderBase]: For 625040/625076 co-relation queries the response was YES. [2024-06-04 15:45:06,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46512 conditions, 5665 events. 3659/5665 cut-off events. For 625040/625076 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 31978 event pairs, 772 based on Foata normal form. 25/5683 useless extension candidates. Maximal degree in co-relation 46348. Up to 5539 conditions per place. [2024-06-04 15:45:06,912 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 387 selfloop transitions, 63 changer transitions 0/453 dead transitions. [2024-06-04 15:45:06,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 453 transitions, 6961 flow [2024-06-04 15:45:06,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:45:06,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:45:06,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 119 transitions. [2024-06-04 15:45:06,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3628048780487805 [2024-06-04 15:45:06,913 INFO L175 Difference]: Start difference. First operand has 351 places, 437 transitions, 6009 flow. Second operand 8 states and 119 transitions. [2024-06-04 15:45:06,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 453 transitions, 6961 flow [2024-06-04 15:45:09,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 453 transitions, 6745 flow, removed 57 selfloop flow, removed 4 redundant places. [2024-06-04 15:45:09,657 INFO L231 Difference]: Finished difference. Result has 355 places, 437 transitions, 5925 flow [2024-06-04 15:45:09,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5793, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5925, PETRI_PLACES=355, PETRI_TRANSITIONS=437} [2024-06-04 15:45:09,658 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 313 predicate places. [2024-06-04 15:45:09,658 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 437 transitions, 5925 flow [2024-06-04 15:45:09,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:45:09,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:45:09,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:45:09,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-04 15:45:09,659 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:45:09,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:45:09,659 INFO L85 PathProgramCache]: Analyzing trace with hash 496308691, now seen corresponding path program 6 times [2024-06-04 15:45:09,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:45:09,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554295696] [2024-06-04 15:45:09,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:45:09,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:45:09,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:45:10,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:45:10,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:45:10,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554295696] [2024-06-04 15:45:10,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554295696] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:45:10,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:45:10,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:45:10,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536470598] [2024-06-04 15:45:10,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:45:10,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:45:10,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:45:10,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:45:10,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:45:10,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:45:10,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 437 transitions, 5925 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:45:10,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:45:10,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:45:10,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:45:12,341 INFO L124 PetriNetUnfolderBase]: 3653/5659 cut-off events. [2024-06-04 15:45:12,341 INFO L125 PetriNetUnfolderBase]: For 632645/632645 co-relation queries the response was YES. [2024-06-04 15:45:12,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46232 conditions, 5659 events. 3653/5659 cut-off events. For 632645/632645 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 31934 event pairs, 784 based on Foata normal form. 2/5658 useless extension candidates. Maximal degree in co-relation 46067. Up to 5593 conditions per place. [2024-06-04 15:45:12,424 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 425 selfloop transitions, 26 changer transitions 0/454 dead transitions. [2024-06-04 15:45:12,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 454 transitions, 6885 flow [2024-06-04 15:45:12,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:45:12,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:45:12,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 120 transitions. [2024-06-04 15:45:12,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36585365853658536 [2024-06-04 15:45:12,426 INFO L175 Difference]: Start difference. First operand has 355 places, 437 transitions, 5925 flow. Second operand 8 states and 120 transitions. [2024-06-04 15:45:12,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 454 transitions, 6885 flow [2024-06-04 15:45:14,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 454 transitions, 6725 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-04 15:45:14,801 INFO L231 Difference]: Finished difference. Result has 356 places, 437 transitions, 5823 flow [2024-06-04 15:45:14,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5765, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5823, PETRI_PLACES=356, PETRI_TRANSITIONS=437} [2024-06-04 15:45:14,802 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 314 predicate places. [2024-06-04 15:45:14,802 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 437 transitions, 5823 flow [2024-06-04 15:45:14,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:45:14,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:45:14,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:45:14,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-04 15:45:14,802 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:45:14,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:45:14,803 INFO L85 PathProgramCache]: Analyzing trace with hash -281233803, now seen corresponding path program 7 times [2024-06-04 15:45:14,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:45:14,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539390354] [2024-06-04 15:45:14,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:45:14,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:45:14,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:45:15,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:45:15,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:45:15,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539390354] [2024-06-04 15:45:15,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539390354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:45:15,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:45:15,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:45:15,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342031541] [2024-06-04 15:45:15,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:45:15,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:45:15,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:45:15,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:45:15,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:45:15,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:45:15,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 437 transitions, 5823 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:45:15,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:45:15,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:45:15,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:45:16,877 INFO L124 PetriNetUnfolderBase]: 3663/5669 cut-off events. [2024-06-04 15:45:16,878 INFO L125 PetriNetUnfolderBase]: For 646191/646195 co-relation queries the response was YES. [2024-06-04 15:45:16,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46400 conditions, 5669 events. 3663/5669 cut-off events. For 646191/646195 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 32002 event pairs, 765 based on Foata normal form. 6/5672 useless extension candidates. Maximal degree in co-relation 46234. Up to 5581 conditions per place. [2024-06-04 15:45:16,961 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 419 selfloop transitions, 39 changer transitions 0/461 dead transitions. [2024-06-04 15:45:16,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 461 transitions, 6887 flow [2024-06-04 15:45:16,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:45:16,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:45:16,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 104 transitions. [2024-06-04 15:45:16,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42276422764227645 [2024-06-04 15:45:16,963 INFO L175 Difference]: Start difference. First operand has 356 places, 437 transitions, 5823 flow. Second operand 6 states and 104 transitions. [2024-06-04 15:45:16,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 461 transitions, 6887 flow [2024-06-04 15:45:18,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 461 transitions, 6809 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-04 15:45:18,678 INFO L231 Difference]: Finished difference. Result has 356 places, 441 transitions, 5950 flow [2024-06-04 15:45:18,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5745, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5950, PETRI_PLACES=356, PETRI_TRANSITIONS=441} [2024-06-04 15:45:18,678 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 314 predicate places. [2024-06-04 15:45:18,678 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 441 transitions, 5950 flow [2024-06-04 15:45:18,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:45:18,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:45:18,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:45:18,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-04 15:45:18,679 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:45:18,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:45:18,679 INFO L85 PathProgramCache]: Analyzing trace with hash 112358937, now seen corresponding path program 8 times [2024-06-04 15:45:18,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:45:18,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677104070] [2024-06-04 15:45:18,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:45:18,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:45:18,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:45:19,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:45:19,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:45:19,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677104070] [2024-06-04 15:45:19,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677104070] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:45:19,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:45:19,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:45:19,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628881750] [2024-06-04 15:45:19,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:45:19,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:45:19,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:45:19,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:45:19,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:45:19,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:45:19,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 441 transitions, 5950 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:45:19,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:45:19,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:45:19,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:45:21,021 INFO L124 PetriNetUnfolderBase]: 3683/5697 cut-off events. [2024-06-04 15:45:21,021 INFO L125 PetriNetUnfolderBase]: For 661182/661186 co-relation queries the response was YES. [2024-06-04 15:45:21,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46897 conditions, 5697 events. 3683/5697 cut-off events. For 661182/661186 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 32173 event pairs, 765 based on Foata normal form. 6/5700 useless extension candidates. Maximal degree in co-relation 46729. Up to 5562 conditions per place. [2024-06-04 15:45:21,091 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 405 selfloop transitions, 64 changer transitions 0/472 dead transitions. [2024-06-04 15:45:21,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 472 transitions, 7075 flow [2024-06-04 15:45:21,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:45:21,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:45:21,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-06-04 15:45:21,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4250871080139373 [2024-06-04 15:45:21,092 INFO L175 Difference]: Start difference. First operand has 356 places, 441 transitions, 5950 flow. Second operand 7 states and 122 transitions. [2024-06-04 15:45:21,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 472 transitions, 7075 flow [2024-06-04 15:45:23,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 472 transitions, 6992 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-06-04 15:45:23,512 INFO L231 Difference]: Finished difference. Result has 361 places, 447 transitions, 6160 flow [2024-06-04 15:45:23,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5867, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6160, PETRI_PLACES=361, PETRI_TRANSITIONS=447} [2024-06-04 15:45:23,512 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 319 predicate places. [2024-06-04 15:45:23,512 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 447 transitions, 6160 flow [2024-06-04 15:45:23,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:45:23,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:45:23,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:45:23,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-04 15:45:23,513 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:45:23,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:45:23,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1155523013, now seen corresponding path program 10 times [2024-06-04 15:45:23,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:45:23,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115626248] [2024-06-04 15:45:23,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:45:23,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:45:23,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:45:24,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:45:24,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:45:24,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115626248] [2024-06-04 15:45:24,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115626248] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:45:24,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:45:24,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:45:24,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153962407] [2024-06-04 15:45:24,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:45:24,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:45:24,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:45:24,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:45:24,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:45:24,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:45:24,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 447 transitions, 6160 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:45:24,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:45:24,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:45:24,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:45:25,661 INFO L124 PetriNetUnfolderBase]: 3680/5695 cut-off events. [2024-06-04 15:45:25,661 INFO L125 PetriNetUnfolderBase]: For 668659/668695 co-relation queries the response was YES. [2024-06-04 15:45:25,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47064 conditions, 5695 events. 3680/5695 cut-off events. For 668659/668695 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 32153 event pairs, 773 based on Foata normal form. 25/5713 useless extension candidates. Maximal degree in co-relation 46894. Up to 5543 conditions per place. [2024-06-04 15:45:25,745 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 406 selfloop transitions, 61 changer transitions 0/470 dead transitions. [2024-06-04 15:45:25,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 470 transitions, 7528 flow [2024-06-04 15:45:25,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:45:25,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:45:25,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-06-04 15:45:25,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41114982578397213 [2024-06-04 15:45:25,746 INFO L175 Difference]: Start difference. First operand has 361 places, 447 transitions, 6160 flow. Second operand 7 states and 118 transitions. [2024-06-04 15:45:25,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 470 transitions, 7528 flow [2024-06-04 15:45:29,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 470 transitions, 7352 flow, removed 50 selfloop flow, removed 4 redundant places. [2024-06-04 15:45:29,247 INFO L231 Difference]: Finished difference. Result has 364 places, 447 transitions, 6116 flow [2024-06-04 15:45:29,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5984, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6116, PETRI_PLACES=364, PETRI_TRANSITIONS=447} [2024-06-04 15:45:29,248 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 322 predicate places. [2024-06-04 15:45:29,248 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 447 transitions, 6116 flow [2024-06-04 15:45:29,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:45:29,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:45:29,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:45:29,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-04 15:45:29,248 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:45:29,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:45:29,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1153510761, now seen corresponding path program 9 times [2024-06-04 15:45:29,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:45:29,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100358463] [2024-06-04 15:45:29,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:45:29,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:45:29,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:45:29,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:45:29,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:45:29,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100358463] [2024-06-04 15:45:29,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100358463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:45:29,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:45:29,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:45:29,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764790544] [2024-06-04 15:45:29,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:45:29,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:45:29,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:45:29,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:45:29,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:45:30,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:45:30,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 447 transitions, 6116 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:45:30,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:45:30,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:45:30,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:45:31,386 INFO L124 PetriNetUnfolderBase]: 3690/5707 cut-off events. [2024-06-04 15:45:31,386 INFO L125 PetriNetUnfolderBase]: For 685254/685258 co-relation queries the response was YES. [2024-06-04 15:45:31,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47302 conditions, 5707 events. 3690/5707 cut-off events. For 685254/685258 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 32213 event pairs, 769 based on Foata normal form. 6/5710 useless extension candidates. Maximal degree in co-relation 47131. Up to 5630 conditions per place. [2024-06-04 15:45:31,473 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 428 selfloop transitions, 37 changer transitions 0/468 dead transitions. [2024-06-04 15:45:31,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 468 transitions, 7187 flow [2024-06-04 15:45:31,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:45:31,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:45:31,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 110 transitions. [2024-06-04 15:45:31,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3832752613240418 [2024-06-04 15:45:31,474 INFO L175 Difference]: Start difference. First operand has 364 places, 447 transitions, 6116 flow. Second operand 7 states and 110 transitions. [2024-06-04 15:45:31,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 468 transitions, 7187 flow [2024-06-04 15:45:33,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 468 transitions, 7063 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-04 15:45:33,529 INFO L231 Difference]: Finished difference. Result has 364 places, 450 transitions, 6161 flow [2024-06-04 15:45:33,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5992, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6161, PETRI_PLACES=364, PETRI_TRANSITIONS=450} [2024-06-04 15:45:33,529 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 322 predicate places. [2024-06-04 15:45:33,530 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 450 transitions, 6161 flow [2024-06-04 15:45:33,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:45:33,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:45:33,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:45:33,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-04 15:45:33,530 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:45:33,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:45:33,531 INFO L85 PathProgramCache]: Analyzing trace with hash -293089443, now seen corresponding path program 10 times [2024-06-04 15:45:33,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:45:33,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050017131] [2024-06-04 15:45:33,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:45:33,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:45:33,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:45:34,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:45:34,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:45:34,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050017131] [2024-06-04 15:45:34,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050017131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:45:34,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:45:34,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:45:34,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817173261] [2024-06-04 15:45:34,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:45:34,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:45:34,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:45:34,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:45:34,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:45:34,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:45:34,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 450 transitions, 6161 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:45:34,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:45:34,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:45:34,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:45:35,682 INFO L124 PetriNetUnfolderBase]: 3684/5699 cut-off events. [2024-06-04 15:45:35,683 INFO L125 PetriNetUnfolderBase]: For 676958/676962 co-relation queries the response was YES. [2024-06-04 15:45:35,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46964 conditions, 5699 events. 3684/5699 cut-off events. For 676958/676962 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 32166 event pairs, 768 based on Foata normal form. 6/5702 useless extension candidates. Maximal degree in co-relation 46795. Up to 5573 conditions per place. [2024-06-04 15:45:35,755 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 412 selfloop transitions, 57 changer transitions 0/472 dead transitions. [2024-06-04 15:45:35,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 472 transitions, 7177 flow [2024-06-04 15:45:35,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:45:35,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:45:35,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 116 transitions. [2024-06-04 15:45:35,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40418118466898956 [2024-06-04 15:45:35,757 INFO L175 Difference]: Start difference. First operand has 364 places, 450 transitions, 6161 flow. Second operand 7 states and 116 transitions. [2024-06-04 15:45:35,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 472 transitions, 7177 flow [2024-06-04 15:45:38,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 472 transitions, 7001 flow, removed 50 selfloop flow, removed 5 redundant places. [2024-06-04 15:45:38,444 INFO L231 Difference]: Finished difference. Result has 366 places, 450 transitions, 6113 flow [2024-06-04 15:45:38,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5985, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6113, PETRI_PLACES=366, PETRI_TRANSITIONS=450} [2024-06-04 15:45:38,445 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 324 predicate places. [2024-06-04 15:45:38,445 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 450 transitions, 6113 flow [2024-06-04 15:45:38,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:45:38,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:45:38,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:45:38,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-04 15:45:38,445 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:45:38,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:45:38,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1153748097, now seen corresponding path program 11 times [2024-06-04 15:45:38,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:45:38,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249446486] [2024-06-04 15:45:38,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:45:38,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:45:38,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:45:39,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:45:39,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:45:39,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249446486] [2024-06-04 15:45:39,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249446486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:45:39,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:45:39,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:45:39,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405546064] [2024-06-04 15:45:39,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:45:39,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:45:39,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:45:39,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:45:39,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:45:39,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:45:39,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 450 transitions, 6113 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:45:39,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:45:39,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:45:39,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:45:40,605 INFO L124 PetriNetUnfolderBase]: 3681/5695 cut-off events. [2024-06-04 15:45:40,605 INFO L125 PetriNetUnfolderBase]: For 667022/667026 co-relation queries the response was YES. [2024-06-04 15:45:40,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46689 conditions, 5695 events. 3681/5695 cut-off events. For 667022/667026 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 32150 event pairs, 765 based on Foata normal form. 5/5697 useless extension candidates. Maximal degree in co-relation 46520. Up to 5607 conditions per place. [2024-06-04 15:45:40,695 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 432 selfloop transitions, 38 changer transitions 0/473 dead transitions. [2024-06-04 15:45:40,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 473 transitions, 7129 flow [2024-06-04 15:45:40,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:45:40,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:45:40,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2024-06-04 15:45:40,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40069686411149824 [2024-06-04 15:45:40,696 INFO L175 Difference]: Start difference. First operand has 366 places, 450 transitions, 6113 flow. Second operand 7 states and 115 transitions. [2024-06-04 15:45:40,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 473 transitions, 7129 flow [2024-06-04 15:45:43,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 473 transitions, 6913 flow, removed 55 selfloop flow, removed 6 redundant places. [2024-06-04 15:45:43,411 INFO L231 Difference]: Finished difference. Result has 367 places, 450 transitions, 5987 flow [2024-06-04 15:45:43,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5897, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5987, PETRI_PLACES=367, PETRI_TRANSITIONS=450} [2024-06-04 15:45:43,412 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 325 predicate places. [2024-06-04 15:45:43,412 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 450 transitions, 5987 flow [2024-06-04 15:45:43,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:45:43,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:45:43,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:45:43,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-04 15:45:43,412 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:45:43,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:45:43,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1155107117, now seen corresponding path program 11 times [2024-06-04 15:45:43,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:45:43,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270387441] [2024-06-04 15:45:43,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:45:43,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:45:43,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:45:44,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:45:44,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:45:44,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270387441] [2024-06-04 15:45:44,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270387441] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:45:44,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:45:44,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:45:44,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592354670] [2024-06-04 15:45:44,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:45:44,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:45:44,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:45:44,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:45:44,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:45:44,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:45:44,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 450 transitions, 5987 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:45:44,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:45:44,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:45:44,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:45:45,548 INFO L124 PetriNetUnfolderBase]: 3691/5713 cut-off events. [2024-06-04 15:45:45,548 INFO L125 PetriNetUnfolderBase]: For 657689/657689 co-relation queries the response was YES. [2024-06-04 15:45:45,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46517 conditions, 5713 events. 3691/5713 cut-off events. For 657689/657689 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 32299 event pairs, 786 based on Foata normal form. 2/5712 useless extension candidates. Maximal degree in co-relation 46348. Up to 5635 conditions per place. [2024-06-04 15:45:45,628 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 434 selfloop transitions, 32 changer transitions 0/469 dead transitions. [2024-06-04 15:45:45,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 469 transitions, 7042 flow [2024-06-04 15:45:45,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:45:45,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:45:45,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 109 transitions. [2024-06-04 15:45:45,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3797909407665505 [2024-06-04 15:45:45,629 INFO L175 Difference]: Start difference. First operand has 367 places, 450 transitions, 5987 flow. Second operand 7 states and 109 transitions. [2024-06-04 15:45:45,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 469 transitions, 7042 flow [2024-06-04 15:45:48,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 469 transitions, 6974 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-04 15:45:48,203 INFO L231 Difference]: Finished difference. Result has 369 places, 453 transitions, 6066 flow [2024-06-04 15:45:48,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5919, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6066, PETRI_PLACES=369, PETRI_TRANSITIONS=453} [2024-06-04 15:45:48,203 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 327 predicate places. [2024-06-04 15:45:48,203 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 453 transitions, 6066 flow [2024-06-04 15:45:48,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:45:48,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:45:48,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:45:48,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-04 15:45:48,204 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:45:48,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:45:48,204 INFO L85 PathProgramCache]: Analyzing trace with hash -115957923, now seen corresponding path program 12 times [2024-06-04 15:45:48,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:45:48,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261695111] [2024-06-04 15:45:48,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:45:48,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:45:48,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:45:49,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:45:49,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:45:49,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261695111] [2024-06-04 15:45:49,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261695111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:45:49,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:45:49,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:45:49,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767963082] [2024-06-04 15:45:49,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:45:49,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:45:49,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:45:49,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:45:49,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:45:49,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:45:49,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 453 transitions, 6066 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:45:49,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:45:49,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:45:49,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:45:50,392 INFO L124 PetriNetUnfolderBase]: 3685/5703 cut-off events. [2024-06-04 15:45:50,393 INFO L125 PetriNetUnfolderBase]: For 650744/650780 co-relation queries the response was YES. [2024-06-04 15:45:50,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46294 conditions, 5703 events. 3685/5703 cut-off events. For 650744/650780 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 32218 event pairs, 765 based on Foata normal form. 26/5722 useless extension candidates. Maximal degree in co-relation 46124. Up to 5482 conditions per place. [2024-06-04 15:45:50,470 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 376 selfloop transitions, 95 changer transitions 0/474 dead transitions. [2024-06-04 15:45:50,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 474 transitions, 7086 flow [2024-06-04 15:45:50,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:45:50,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:45:50,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 116 transitions. [2024-06-04 15:45:50,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40418118466898956 [2024-06-04 15:45:50,471 INFO L175 Difference]: Start difference. First operand has 369 places, 453 transitions, 6066 flow. Second operand 7 states and 116 transitions. [2024-06-04 15:45:50,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 474 transitions, 7086 flow [2024-06-04 15:45:53,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 474 transitions, 6884 flow, removed 48 selfloop flow, removed 6 redundant places. [2024-06-04 15:45:53,260 INFO L231 Difference]: Finished difference. Result has 370 places, 453 transitions, 6068 flow [2024-06-04 15:45:53,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5864, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6068, PETRI_PLACES=370, PETRI_TRANSITIONS=453} [2024-06-04 15:45:53,261 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 328 predicate places. [2024-06-04 15:45:53,261 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 453 transitions, 6068 flow [2024-06-04 15:45:53,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:45:53,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:45:53,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:45:53,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-04 15:45:53,261 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:45:53,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:45:53,261 INFO L85 PathProgramCache]: Analyzing trace with hash -115720959, now seen corresponding path program 12 times [2024-06-04 15:45:53,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:45:53,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691485686] [2024-06-04 15:45:53,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:45:53,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:45:53,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:45:54,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:45:54,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:45:54,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691485686] [2024-06-04 15:45:54,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691485686] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:45:54,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:45:54,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:45:54,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442540698] [2024-06-04 15:45:54,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:45:54,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:45:54,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:45:54,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:45:54,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:45:54,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:45:54,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 453 transitions, 6068 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:45:54,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:45:54,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:45:54,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:45:55,370 INFO L124 PetriNetUnfolderBase]: 3682/5699 cut-off events. [2024-06-04 15:45:55,371 INFO L125 PetriNetUnfolderBase]: For 641863/641899 co-relation queries the response was YES. [2024-06-04 15:45:55,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46114 conditions, 5699 events. 3682/5699 cut-off events. For 641863/641899 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 32214 event pairs, 765 based on Foata normal form. 25/5717 useless extension candidates. Maximal degree in co-relation 45945. Up to 5549 conditions per place. [2024-06-04 15:45:55,456 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 407 selfloop transitions, 64 changer transitions 0/474 dead transitions. [2024-06-04 15:45:55,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 474 transitions, 7080 flow [2024-06-04 15:45:55,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:45:55,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:45:55,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2024-06-04 15:45:55,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40069686411149824 [2024-06-04 15:45:55,457 INFO L175 Difference]: Start difference. First operand has 370 places, 453 transitions, 6068 flow. Second operand 7 states and 115 transitions. [2024-06-04 15:45:55,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 474 transitions, 7080 flow [2024-06-04 15:45:58,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 474 transitions, 6802 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-04 15:45:58,334 INFO L231 Difference]: Finished difference. Result has 370 places, 453 transitions, 5928 flow [2024-06-04 15:45:58,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5790, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5928, PETRI_PLACES=370, PETRI_TRANSITIONS=453} [2024-06-04 15:45:58,335 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 328 predicate places. [2024-06-04 15:45:58,335 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 453 transitions, 5928 flow [2024-06-04 15:45:58,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:45:58,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:45:58,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:45:58,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-04 15:45:58,336 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:45:58,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:45:58,336 INFO L85 PathProgramCache]: Analyzing trace with hash -2132943859, now seen corresponding path program 2 times [2024-06-04 15:45:58,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:45:58,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653142550] [2024-06-04 15:45:58,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:45:58,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:45:58,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:45:59,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:45:59,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:45:59,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653142550] [2024-06-04 15:45:59,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653142550] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:45:59,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:45:59,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:45:59,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28381602] [2024-06-04 15:45:59,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:45:59,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:45:59,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:45:59,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:45:59,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:45:59,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:45:59,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 453 transitions, 5928 flow. Second operand has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:45:59,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:45:59,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:45:59,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:46:00,888 INFO L124 PetriNetUnfolderBase]: 3690/5709 cut-off events. [2024-06-04 15:46:00,888 INFO L125 PetriNetUnfolderBase]: For 630917/630921 co-relation queries the response was YES. [2024-06-04 15:46:00,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45873 conditions, 5709 events. 3690/5709 cut-off events. For 630917/630921 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 32258 event pairs, 766 based on Foata normal form. 6/5712 useless extension candidates. Maximal degree in co-relation 45705. Up to 5638 conditions per place. [2024-06-04 15:46:00,972 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 438 selfloop transitions, 31 changer transitions 0/472 dead transitions. [2024-06-04 15:46:00,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 472 transitions, 6972 flow [2024-06-04 15:46:00,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:46:00,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:46:00,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 100 transitions. [2024-06-04 15:46:00,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4065040650406504 [2024-06-04 15:46:00,973 INFO L175 Difference]: Start difference. First operand has 370 places, 453 transitions, 5928 flow. Second operand 6 states and 100 transitions. [2024-06-04 15:46:00,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 472 transitions, 6972 flow [2024-06-04 15:46:03,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 472 transitions, 6808 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-04 15:46:03,767 INFO L231 Difference]: Finished difference. Result has 369 places, 455 transitions, 5885 flow [2024-06-04 15:46:03,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5764, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5885, PETRI_PLACES=369, PETRI_TRANSITIONS=455} [2024-06-04 15:46:03,767 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 327 predicate places. [2024-06-04 15:46:03,767 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 455 transitions, 5885 flow [2024-06-04 15:46:03,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:46:03,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:46:03,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:46:03,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-04 15:46:03,768 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:46:03,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:46:03,768 INFO L85 PathProgramCache]: Analyzing trace with hash -292843365, now seen corresponding path program 3 times [2024-06-04 15:46:03,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:46:03,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217395879] [2024-06-04 15:46:03,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:46:03,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:46:03,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:46:04,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:46:04,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:46:04,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217395879] [2024-06-04 15:46:04,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217395879] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:46:04,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:46:04,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:46:04,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125322246] [2024-06-04 15:46:04,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:46:04,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:46:04,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:46:04,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:46:04,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:46:04,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:46:04,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 455 transitions, 5885 flow. Second operand has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:46:04,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:46:04,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:46:04,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:46:06,284 INFO L124 PetriNetUnfolderBase]: 3698/5721 cut-off events. [2024-06-04 15:46:06,285 INFO L125 PetriNetUnfolderBase]: For 632391/632395 co-relation queries the response was YES. [2024-06-04 15:46:06,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46000 conditions, 5721 events. 3698/5721 cut-off events. For 632391/632395 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 32335 event pairs, 764 based on Foata normal form. 6/5724 useless extension candidates. Maximal degree in co-relation 45832. Up to 5630 conditions per place. [2024-06-04 15:46:06,368 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 429 selfloop transitions, 43 changer transitions 0/475 dead transitions. [2024-06-04 15:46:06,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 475 transitions, 6941 flow [2024-06-04 15:46:06,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:46:06,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:46:06,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 112 transitions. [2024-06-04 15:46:06,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3902439024390244 [2024-06-04 15:46:06,369 INFO L175 Difference]: Start difference. First operand has 369 places, 455 transitions, 5885 flow. Second operand 7 states and 112 transitions. [2024-06-04 15:46:06,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 475 transitions, 6941 flow [2024-06-04 15:46:09,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 475 transitions, 6836 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-04 15:46:09,017 INFO L231 Difference]: Finished difference. Result has 372 places, 457 transitions, 5932 flow [2024-06-04 15:46:09,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5780, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5932, PETRI_PLACES=372, PETRI_TRANSITIONS=457} [2024-06-04 15:46:09,018 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 330 predicate places. [2024-06-04 15:46:09,018 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 457 transitions, 5932 flow [2024-06-04 15:46:09,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:46:09,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:46:09,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:46:09,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-04 15:46:09,018 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:46:09,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:46:09,019 INFO L85 PathProgramCache]: Analyzing trace with hash 120938745, now seen corresponding path program 4 times [2024-06-04 15:46:09,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:46:09,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111705505] [2024-06-04 15:46:09,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:46:09,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:46:09,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:46:10,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:46:10,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:46:10,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111705505] [2024-06-04 15:46:10,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111705505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:46:10,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:46:10,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:46:10,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457615639] [2024-06-04 15:46:10,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:46:10,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:46:10,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:46:10,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:46:10,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:46:10,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:46:10,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 457 transitions, 5932 flow. Second operand has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:46:10,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:46:10,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:46:10,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:46:11,534 INFO L124 PetriNetUnfolderBase]: 3693/5714 cut-off events. [2024-06-04 15:46:11,534 INFO L125 PetriNetUnfolderBase]: For 637929/637933 co-relation queries the response was YES. [2024-06-04 15:46:11,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45970 conditions, 5714 events. 3693/5714 cut-off events. For 637929/637933 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 32282 event pairs, 763 based on Foata normal form. 6/5717 useless extension candidates. Maximal degree in co-relation 45801. Up to 5629 conditions per place. [2024-06-04 15:46:11,611 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 440 selfloop transitions, 35 changer transitions 0/478 dead transitions. [2024-06-04 15:46:11,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 478 transitions, 7000 flow [2024-06-04 15:46:11,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:46:11,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:46:11,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 112 transitions. [2024-06-04 15:46:11,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3902439024390244 [2024-06-04 15:46:11,612 INFO L175 Difference]: Start difference. First operand has 372 places, 457 transitions, 5932 flow. Second operand 7 states and 112 transitions. [2024-06-04 15:46:11,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 478 transitions, 7000 flow [2024-06-04 15:46:14,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 478 transitions, 6864 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-04 15:46:14,441 INFO L231 Difference]: Finished difference. Result has 374 places, 459 transitions, 5933 flow [2024-06-04 15:46:14,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5800, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5933, PETRI_PLACES=374, PETRI_TRANSITIONS=459} [2024-06-04 15:46:14,441 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 332 predicate places. [2024-06-04 15:46:14,441 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 459 transitions, 5933 flow [2024-06-04 15:46:14,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:46:14,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:46:14,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:46:14,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-04 15:46:14,442 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:46:14,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:46:14,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1835569313, now seen corresponding path program 1 times [2024-06-04 15:46:14,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:46:14,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574199280] [2024-06-04 15:46:14,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:46:14,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:46:14,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:46:15,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:46:15,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:46:15,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574199280] [2024-06-04 15:46:15,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574199280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:46:15,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:46:15,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:46:15,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338394702] [2024-06-04 15:46:15,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:46:15,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:46:15,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:46:15,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:46:15,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:46:15,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-04 15:46:15,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 459 transitions, 5933 flow. Second operand has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:46:15,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:46:15,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-04 15:46:15,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:46:17,149 INFO L124 PetriNetUnfolderBase]: 3677/5753 cut-off events. [2024-06-04 15:46:17,150 INFO L125 PetriNetUnfolderBase]: For 721775/721792 co-relation queries the response was YES. [2024-06-04 15:46:17,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47315 conditions, 5753 events. 3677/5753 cut-off events. For 721775/721792 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 33173 event pairs, 749 based on Foata normal form. 11/5757 useless extension candidates. Maximal degree in co-relation 47145. Up to 5265 conditions per place. [2024-06-04 15:46:17,220 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 389 selfloop transitions, 59 changer transitions 0/502 dead transitions. [2024-06-04 15:46:17,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 502 transitions, 7268 flow [2024-06-04 15:46:17,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:46:17,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:46:17,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-04 15:46:17,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42276422764227645 [2024-06-04 15:46:17,221 INFO L175 Difference]: Start difference. First operand has 374 places, 459 transitions, 5933 flow. Second operand 9 states and 156 transitions. [2024-06-04 15:46:17,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 502 transitions, 7268 flow [2024-06-04 15:46:19,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 502 transitions, 7151 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-04 15:46:19,378 INFO L231 Difference]: Finished difference. Result has 379 places, 464 transitions, 6026 flow [2024-06-04 15:46:19,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5816, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6026, PETRI_PLACES=379, PETRI_TRANSITIONS=464} [2024-06-04 15:46:19,378 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 337 predicate places. [2024-06-04 15:46:19,378 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 464 transitions, 6026 flow [2024-06-04 15:46:19,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:46:19,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:46:19,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:46:19,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-04 15:46:19,378 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:46:19,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:46:19,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1835629763, now seen corresponding path program 2 times [2024-06-04 15:46:19,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:46:19,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275654309] [2024-06-04 15:46:19,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:46:19,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:46:19,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:46:20,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:46:20,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:46:20,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275654309] [2024-06-04 15:46:20,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275654309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:46:20,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:46:20,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:46:20,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80906099] [2024-06-04 15:46:20,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:46:20,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:46:20,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:46:20,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:46:20,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:46:20,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-04 15:46:20,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 464 transitions, 6026 flow. Second operand has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:46:20,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:46:20,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-04 15:46:20,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:46:21,861 INFO L124 PetriNetUnfolderBase]: 3713/5809 cut-off events. [2024-06-04 15:46:21,861 INFO L125 PetriNetUnfolderBase]: For 747549/747598 co-relation queries the response was YES. [2024-06-04 15:46:21,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47992 conditions, 5809 events. 3713/5809 cut-off events. For 747549/747598 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 33618 event pairs, 790 based on Foata normal form. 12/5813 useless extension candidates. Maximal degree in co-relation 47820. Up to 5431 conditions per place. [2024-06-04 15:46:21,953 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 374 selfloop transitions, 68 changer transitions 0/496 dead transitions. [2024-06-04 15:46:21,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 496 transitions, 7240 flow [2024-06-04 15:46:21,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:46:21,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:46:21,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-04 15:46:21,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4092140921409214 [2024-06-04 15:46:21,954 INFO L175 Difference]: Start difference. First operand has 379 places, 464 transitions, 6026 flow. Second operand 9 states and 151 transitions. [2024-06-04 15:46:21,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 496 transitions, 7240 flow [2024-06-04 15:46:24,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 496 transitions, 7181 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-04 15:46:24,923 INFO L231 Difference]: Finished difference. Result has 384 places, 465 transitions, 6130 flow [2024-06-04 15:46:24,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5967, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6130, PETRI_PLACES=384, PETRI_TRANSITIONS=465} [2024-06-04 15:46:24,924 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 342 predicate places. [2024-06-04 15:46:24,924 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 465 transitions, 6130 flow [2024-06-04 15:46:24,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:46:24,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:46:24,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:46:24,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-04 15:46:24,924 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:46:24,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:46:24,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1838426273, now seen corresponding path program 3 times [2024-06-04 15:46:24,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:46:24,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450852172] [2024-06-04 15:46:24,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:46:24,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:46:24,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:46:26,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:46:26,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:46:26,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450852172] [2024-06-04 15:46:26,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450852172] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:46:26,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:46:26,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:46:26,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118679608] [2024-06-04 15:46:26,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:46:26,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:46:26,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:46:26,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:46:26,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:46:26,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-04 15:46:26,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 465 transitions, 6130 flow. Second operand has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:46:26,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:46:26,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-04 15:46:26,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:46:27,424 INFO L124 PetriNetUnfolderBase]: 3757/5877 cut-off events. [2024-06-04 15:46:27,424 INFO L125 PetriNetUnfolderBase]: For 776879/776945 co-relation queries the response was YES. [2024-06-04 15:46:27,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48862 conditions, 5877 events. 3757/5877 cut-off events. For 776879/776945 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 34104 event pairs, 798 based on Foata normal form. 13/5880 useless extension candidates. Maximal degree in co-relation 48688. Up to 5539 conditions per place. [2024-06-04 15:46:27,511 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 394 selfloop transitions, 46 changer transitions 0/494 dead transitions. [2024-06-04 15:46:27,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 494 transitions, 7190 flow [2024-06-04 15:46:27,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:46:27,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:46:27,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-04 15:46:27,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3956639566395664 [2024-06-04 15:46:27,512 INFO L175 Difference]: Start difference. First operand has 384 places, 465 transitions, 6130 flow. Second operand 9 states and 146 transitions. [2024-06-04 15:46:27,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 494 transitions, 7190 flow [2024-06-04 15:46:29,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 494 transitions, 7051 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-04 15:46:29,615 INFO L231 Difference]: Finished difference. Result has 386 places, 466 transitions, 6113 flow [2024-06-04 15:46:29,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5991, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6113, PETRI_PLACES=386, PETRI_TRANSITIONS=466} [2024-06-04 15:46:29,616 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 344 predicate places. [2024-06-04 15:46:29,616 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 466 transitions, 6113 flow [2024-06-04 15:46:29,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:46:29,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:46:29,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:46:29,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-04 15:46:29,616 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:46:29,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:46:29,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1953717443, now seen corresponding path program 4 times [2024-06-04 15:46:29,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:46:29,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076360723] [2024-06-04 15:46:29,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:46:29,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:46:29,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:46:31,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:46:31,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:46:31,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076360723] [2024-06-04 15:46:31,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076360723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:46:31,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:46:31,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:46:31,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712779260] [2024-06-04 15:46:31,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:46:31,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:46:31,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:46:31,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:46:31,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:46:31,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-04 15:46:31,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 466 transitions, 6113 flow. Second operand has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:46:31,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:46:31,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-04 15:46:31,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:46:32,610 INFO L124 PetriNetUnfolderBase]: 3799/5943 cut-off events. [2024-06-04 15:46:32,610 INFO L125 PetriNetUnfolderBase]: For 773782/773784 co-relation queries the response was YES. [2024-06-04 15:46:32,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49264 conditions, 5943 events. 3799/5943 cut-off events. For 773782/773784 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 34542 event pairs, 805 based on Foata normal form. 13/5948 useless extension candidates. Maximal degree in co-relation 49089. Up to 5638 conditions per place. [2024-06-04 15:46:32,700 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 403 selfloop transitions, 34 changer transitions 0/491 dead transitions. [2024-06-04 15:46:32,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 491 transitions, 7117 flow [2024-06-04 15:46:32,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:46:32,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:46:32,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-06-04 15:46:32,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3821138211382114 [2024-06-04 15:46:32,701 INFO L175 Difference]: Start difference. First operand has 386 places, 466 transitions, 6113 flow. Second operand 9 states and 141 transitions. [2024-06-04 15:46:32,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 491 transitions, 7117 flow [2024-06-04 15:46:34,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 491 transitions, 7023 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-04 15:46:34,895 INFO L231 Difference]: Finished difference. Result has 388 places, 467 transitions, 6118 flow [2024-06-04 15:46:34,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6019, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6118, PETRI_PLACES=388, PETRI_TRANSITIONS=467} [2024-06-04 15:46:34,895 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 346 predicate places. [2024-06-04 15:46:34,895 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 467 transitions, 6118 flow [2024-06-04 15:46:34,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:46:34,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:46:34,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:46:34,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-04 15:46:34,896 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:46:34,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:46:34,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1953902141, now seen corresponding path program 1 times [2024-06-04 15:46:34,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:46:34,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299047698] [2024-06-04 15:46:34,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:46:34,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:46:34,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:46:36,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:46:36,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:46:36,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299047698] [2024-06-04 15:46:36,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299047698] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:46:36,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:46:36,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:46:36,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834507895] [2024-06-04 15:46:36,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:46:36,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:46:36,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:46:36,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:46:36,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:46:36,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:46:36,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 467 transitions, 6118 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:46:36,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:46:36,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:46:36,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:46:37,555 INFO L124 PetriNetUnfolderBase]: 3941/6098 cut-off events. [2024-06-04 15:46:37,555 INFO L125 PetriNetUnfolderBase]: For 739177/739177 co-relation queries the response was YES. [2024-06-04 15:46:37,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50395 conditions, 6098 events. 3941/6098 cut-off events. For 739177/739177 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 34855 event pairs, 842 based on Foata normal form. 2/6097 useless extension candidates. Maximal degree in co-relation 50219. Up to 6030 conditions per place. [2024-06-04 15:46:37,644 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 455 selfloop transitions, 28 changer transitions 0/486 dead transitions. [2024-06-04 15:46:37,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 486 transitions, 7184 flow [2024-06-04 15:46:37,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:46:37,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:46:37,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 119 transitions. [2024-06-04 15:46:37,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3628048780487805 [2024-06-04 15:46:37,645 INFO L175 Difference]: Start difference. First operand has 388 places, 467 transitions, 6118 flow. Second operand 8 states and 119 transitions. [2024-06-04 15:46:37,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 486 transitions, 7184 flow [2024-06-04 15:46:39,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 486 transitions, 7109 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-04 15:46:39,802 INFO L231 Difference]: Finished difference. Result has 389 places, 469 transitions, 6154 flow [2024-06-04 15:46:39,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6043, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6154, PETRI_PLACES=389, PETRI_TRANSITIONS=469} [2024-06-04 15:46:39,802 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 347 predicate places. [2024-06-04 15:46:39,803 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 469 transitions, 6154 flow [2024-06-04 15:46:39,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:46:39,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:46:39,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:46:39,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-04 15:46:39,803 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:46:39,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:46:39,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1148605487, now seen corresponding path program 2 times [2024-06-04 15:46:39,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:46:39,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619687618] [2024-06-04 15:46:39,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:46:39,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:46:39,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:46:40,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:46:40,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:46:40,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619687618] [2024-06-04 15:46:40,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619687618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:46:40,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:46:40,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:46:40,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071808709] [2024-06-04 15:46:40,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:46:40,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:46:40,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:46:40,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:46:40,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:46:40,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:46:40,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 469 transitions, 6154 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:46:40,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:46:40,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:46:40,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:46:42,453 INFO L124 PetriNetUnfolderBase]: 3949/6110 cut-off events. [2024-06-04 15:46:42,453 INFO L125 PetriNetUnfolderBase]: For 753995/753995 co-relation queries the response was YES. [2024-06-04 15:46:42,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50622 conditions, 6110 events. 3949/6110 cut-off events. For 753995/753995 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 34953 event pairs, 845 based on Foata normal form. 2/6109 useless extension candidates. Maximal degree in co-relation 50445. Up to 6026 conditions per place. [2024-06-04 15:46:42,533 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 449 selfloop transitions, 33 changer transitions 0/485 dead transitions. [2024-06-04 15:46:42,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 485 transitions, 7212 flow [2024-06-04 15:46:42,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:46:42,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:46:42,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 97 transitions. [2024-06-04 15:46:42,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3943089430894309 [2024-06-04 15:46:42,535 INFO L175 Difference]: Start difference. First operand has 389 places, 469 transitions, 6154 flow. Second operand 6 states and 97 transitions. [2024-06-04 15:46:42,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 485 transitions, 7212 flow [2024-06-04 15:46:44,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 485 transitions, 7117 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-04 15:46:44,536 INFO L231 Difference]: Finished difference. Result has 389 places, 471 transitions, 6189 flow [2024-06-04 15:46:44,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6059, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6189, PETRI_PLACES=389, PETRI_TRANSITIONS=471} [2024-06-04 15:46:44,537 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 347 predicate places. [2024-06-04 15:46:44,537 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 471 transitions, 6189 flow [2024-06-04 15:46:44,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:46:44,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:46:44,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:46:44,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-04 15:46:44,538 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:46:44,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:46:44,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1148605735, now seen corresponding path program 1 times [2024-06-04 15:46:44,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:46:44,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129311383] [2024-06-04 15:46:44,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:46:44,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:46:44,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:46:45,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:46:45,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:46:45,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129311383] [2024-06-04 15:46:45,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129311383] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:46:45,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:46:45,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:46:45,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485370800] [2024-06-04 15:46:45,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:46:45,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:46:45,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:46:45,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:46:45,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:46:45,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:46:45,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 471 transitions, 6189 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:46:45,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:46:45,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:46:45,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:46:47,057 INFO L124 PetriNetUnfolderBase]: 3944/6103 cut-off events. [2024-06-04 15:46:47,057 INFO L125 PetriNetUnfolderBase]: For 760912/760912 co-relation queries the response was YES. [2024-06-04 15:46:47,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50671 conditions, 6103 events. 3944/6103 cut-off events. For 760912/760912 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 34948 event pairs, 856 based on Foata normal form. 1/6101 useless extension candidates. Maximal degree in co-relation 50493. Up to 6015 conditions per place. [2024-06-04 15:46:47,148 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 449 selfloop transitions, 36 changer transitions 0/488 dead transitions. [2024-06-04 15:46:47,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 488 transitions, 7217 flow [2024-06-04 15:46:47,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:46:47,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:46:47,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 103 transitions. [2024-06-04 15:46:47,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4186991869918699 [2024-06-04 15:46:47,149 INFO L175 Difference]: Start difference. First operand has 389 places, 471 transitions, 6189 flow. Second operand 6 states and 103 transitions. [2024-06-04 15:46:47,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 488 transitions, 7217 flow [2024-06-04 15:46:49,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 488 transitions, 7071 flow, removed 44 selfloop flow, removed 4 redundant places. [2024-06-04 15:46:49,397 INFO L231 Difference]: Finished difference. Result has 391 places, 471 transitions, 6133 flow [2024-06-04 15:46:49,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6043, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6133, PETRI_PLACES=391, PETRI_TRANSITIONS=471} [2024-06-04 15:46:49,398 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 349 predicate places. [2024-06-04 15:46:49,398 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 471 transitions, 6133 flow [2024-06-04 15:46:49,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:46:49,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:46:49,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:46:49,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-04 15:46:49,399 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:46:49,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:46:49,399 INFO L85 PathProgramCache]: Analyzing trace with hash 120944697, now seen corresponding path program 3 times [2024-06-04 15:46:49,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:46:49,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121067277] [2024-06-04 15:46:49,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:46:49,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:46:49,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:46:50,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:46:50,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:46:50,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121067277] [2024-06-04 15:46:50,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121067277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:46:50,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:46:50,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:46:50,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35081533] [2024-06-04 15:46:50,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:46:50,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:46:50,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:46:50,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:46:50,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:46:50,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:46:50,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 471 transitions, 6133 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:46:50,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:46:50,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:46:50,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:46:51,780 INFO L124 PetriNetUnfolderBase]: 3939/6096 cut-off events. [2024-06-04 15:46:51,780 INFO L125 PetriNetUnfolderBase]: For 754937/754937 co-relation queries the response was YES. [2024-06-04 15:46:51,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50241 conditions, 6096 events. 3939/6096 cut-off events. For 754937/754937 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 34821 event pairs, 857 based on Foata normal form. 2/6095 useless extension candidates. Maximal degree in co-relation 50062. Up to 6050 conditions per place. [2024-06-04 15:46:51,870 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 466 selfloop transitions, 15 changer transitions 0/484 dead transitions. [2024-06-04 15:46:51,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 484 transitions, 7175 flow [2024-06-04 15:46:51,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:46:51,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:46:51,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 91 transitions. [2024-06-04 15:46:51,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3699186991869919 [2024-06-04 15:46:51,872 INFO L175 Difference]: Start difference. First operand has 391 places, 471 transitions, 6133 flow. Second operand 6 states and 91 transitions. [2024-06-04 15:46:51,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 484 transitions, 7175 flow [2024-06-04 15:46:54,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 484 transitions, 7089 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-04 15:46:54,099 INFO L231 Difference]: Finished difference. Result has 391 places, 473 transitions, 6136 flow [2024-06-04 15:46:54,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6047, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6136, PETRI_PLACES=391, PETRI_TRANSITIONS=473} [2024-06-04 15:46:54,099 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 349 predicate places. [2024-06-04 15:46:54,099 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 473 transitions, 6136 flow [2024-06-04 15:46:54,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:46:54,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:46:54,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:46:54,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-04 15:46:54,100 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:46:54,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:46:54,100 INFO L85 PathProgramCache]: Analyzing trace with hash -115712031, now seen corresponding path program 5 times [2024-06-04 15:46:54,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:46:54,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660574654] [2024-06-04 15:46:54,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:46:54,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:46:54,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:46:55,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:46:55,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:46:55,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660574654] [2024-06-04 15:46:55,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660574654] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:46:55,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:46:55,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:46:55,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380385560] [2024-06-04 15:46:55,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:46:55,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:46:55,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:46:55,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:46:55,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:46:55,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-04 15:46:55,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 473 transitions, 6136 flow. Second operand has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:46:55,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:46:55,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-04 15:46:55,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:46:56,819 INFO L124 PetriNetUnfolderBase]: 3825/5989 cut-off events. [2024-06-04 15:46:56,820 INFO L125 PetriNetUnfolderBase]: For 805338/805340 co-relation queries the response was YES. [2024-06-04 15:46:56,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48835 conditions, 5989 events. 3825/5989 cut-off events. For 805338/805340 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 34877 event pairs, 781 based on Foata normal form. 21/6002 useless extension candidates. Maximal degree in co-relation 48656. Up to 5607 conditions per place. [2024-06-04 15:46:56,909 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 403 selfloop transitions, 49 changer transitions 0/506 dead transitions. [2024-06-04 15:46:56,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 506 transitions, 7218 flow [2024-06-04 15:46:56,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:46:56,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:46:56,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-04 15:46:56,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4298780487804878 [2024-06-04 15:46:56,910 INFO L175 Difference]: Start difference. First operand has 391 places, 473 transitions, 6136 flow. Second operand 8 states and 141 transitions. [2024-06-04 15:46:56,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 506 transitions, 7218 flow [2024-06-04 15:46:59,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 506 transitions, 7145 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-04 15:46:59,589 INFO L231 Difference]: Finished difference. Result has 395 places, 475 transitions, 6226 flow [2024-06-04 15:46:59,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6063, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6226, PETRI_PLACES=395, PETRI_TRANSITIONS=475} [2024-06-04 15:46:59,589 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 353 predicate places. [2024-06-04 15:46:59,589 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 475 transitions, 6226 flow [2024-06-04 15:46:59,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:46:59,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:46:59,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:46:59,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-04 15:46:59,590 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:46:59,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:46:59,590 INFO L85 PathProgramCache]: Analyzing trace with hash 836268107, now seen corresponding path program 1 times [2024-06-04 15:46:59,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:46:59,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21203753] [2024-06-04 15:46:59,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:46:59,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:46:59,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:47:00,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:47:00,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:47:00,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21203753] [2024-06-04 15:47:00,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21203753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:47:00,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:47:00,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:47:00,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669065153] [2024-06-04 15:47:00,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:47:00,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:47:00,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:47:00,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:47:00,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:47:00,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:47:00,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 475 transitions, 6226 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:47:00,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:47:00,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:47:00,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:47:01,957 INFO L124 PetriNetUnfolderBase]: 3985/6165 cut-off events. [2024-06-04 15:47:01,957 INFO L125 PetriNetUnfolderBase]: For 745634/745640 co-relation queries the response was YES. [2024-06-04 15:47:02,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50663 conditions, 6165 events. 3985/6165 cut-off events. For 745634/745640 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 35358 event pairs, 825 based on Foata normal form. 8/6170 useless extension candidates. Maximal degree in co-relation 50483. Up to 5913 conditions per place. [2024-06-04 15:47:02,051 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 437 selfloop transitions, 75 changer transitions 0/515 dead transitions. [2024-06-04 15:47:02,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 515 transitions, 7726 flow [2024-06-04 15:47:02,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:47:02,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:47:02,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-04 15:47:02,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4037940379403794 [2024-06-04 15:47:02,052 INFO L175 Difference]: Start difference. First operand has 395 places, 475 transitions, 6226 flow. Second operand 9 states and 149 transitions. [2024-06-04 15:47:02,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 515 transitions, 7726 flow [2024-06-04 15:47:04,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 515 transitions, 7611 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-04 15:47:04,432 INFO L231 Difference]: Finished difference. Result has 398 places, 481 transitions, 6447 flow [2024-06-04 15:47:04,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6113, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6447, PETRI_PLACES=398, PETRI_TRANSITIONS=481} [2024-06-04 15:47:04,433 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 356 predicate places. [2024-06-04 15:47:04,433 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 481 transitions, 6447 flow [2024-06-04 15:47:04,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:47:04,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:47:04,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:47:04,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-04 15:47:04,433 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:47:04,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:47:04,434 INFO L85 PathProgramCache]: Analyzing trace with hash 337226967, now seen corresponding path program 2 times [2024-06-04 15:47:04,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:47:04,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661145397] [2024-06-04 15:47:04,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:47:04,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:47:04,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:47:05,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:47:05,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:47:05,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661145397] [2024-06-04 15:47:05,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661145397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:47:05,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:47:05,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:47:05,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360890572] [2024-06-04 15:47:05,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:47:05,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:47:05,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:47:05,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:47:05,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:47:05,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:47:05,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 481 transitions, 6447 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:47:05,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:47:05,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:47:05,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:47:07,172 INFO L124 PetriNetUnfolderBase]: 4005/6193 cut-off events. [2024-06-04 15:47:07,173 INFO L125 PetriNetUnfolderBase]: For 748933/748939 co-relation queries the response was YES. [2024-06-04 15:47:07,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51157 conditions, 6193 events. 4005/6193 cut-off events. For 748933/748939 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 35501 event pairs, 825 based on Foata normal form. 8/6198 useless extension candidates. Maximal degree in co-relation 50976. Up to 5971 conditions per place. [2024-06-04 15:47:07,256 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 441 selfloop transitions, 73 changer transitions 0/517 dead transitions. [2024-06-04 15:47:07,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 517 transitions, 7698 flow [2024-06-04 15:47:07,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:47:07,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:47:07,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-06-04 15:47:07,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3902439024390244 [2024-06-04 15:47:07,258 INFO L175 Difference]: Start difference. First operand has 398 places, 481 transitions, 6447 flow. Second operand 9 states and 144 transitions. [2024-06-04 15:47:07,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 517 transitions, 7698 flow [2024-06-04 15:47:10,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 517 transitions, 7488 flow, removed 61 selfloop flow, removed 5 redundant places. [2024-06-04 15:47:10,113 INFO L231 Difference]: Finished difference. Result has 402 places, 487 transitions, 6520 flow [2024-06-04 15:47:10,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6260, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6520, PETRI_PLACES=402, PETRI_TRANSITIONS=487} [2024-06-04 15:47:10,113 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 360 predicate places. [2024-06-04 15:47:10,114 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 487 transitions, 6520 flow [2024-06-04 15:47:10,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:47:10,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:47:10,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:47:10,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-04 15:47:10,114 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:47:10,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:47:10,114 INFO L85 PathProgramCache]: Analyzing trace with hash -429070937, now seen corresponding path program 1 times [2024-06-04 15:47:10,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:47:10,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604091275] [2024-06-04 15:47:10,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:47:10,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:47:10,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:47:10,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:47:10,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:47:10,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604091275] [2024-06-04 15:47:10,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604091275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:47:10,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:47:10,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:47:10,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967073423] [2024-06-04 15:47:10,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:47:10,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:47:10,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:47:10,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:47:10,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:47:10,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:47:10,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 487 transitions, 6520 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:47:10,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:47:10,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:47:10,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:47:12,567 INFO L124 PetriNetUnfolderBase]: 4072/6286 cut-off events. [2024-06-04 15:47:12,567 INFO L125 PetriNetUnfolderBase]: For 793199/793205 co-relation queries the response was YES. [2024-06-04 15:47:12,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52329 conditions, 6286 events. 4072/6286 cut-off events. For 793199/793205 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 36053 event pairs, 821 based on Foata normal form. 10/6293 useless extension candidates. Maximal degree in co-relation 52146. Up to 5869 conditions per place. [2024-06-04 15:47:12,670 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 428 selfloop transitions, 108 changer transitions 0/539 dead transitions. [2024-06-04 15:47:12,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 539 transitions, 8120 flow [2024-06-04 15:47:12,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:47:12,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:47:12,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-04 15:47:12,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42005420054200543 [2024-06-04 15:47:12,671 INFO L175 Difference]: Start difference. First operand has 402 places, 487 transitions, 6520 flow. Second operand 9 states and 155 transitions. [2024-06-04 15:47:12,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 539 transitions, 8120 flow [2024-06-04 15:47:15,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 539 transitions, 7916 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-04 15:47:15,528 INFO L231 Difference]: Finished difference. Result has 406 places, 504 transitions, 6791 flow [2024-06-04 15:47:15,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6316, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6791, PETRI_PLACES=406, PETRI_TRANSITIONS=504} [2024-06-04 15:47:15,528 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 364 predicate places. [2024-06-04 15:47:15,528 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 504 transitions, 6791 flow [2024-06-04 15:47:15,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:47:15,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:47:15,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:47:15,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-04 15:47:15,529 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:47:15,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:47:15,529 INFO L85 PathProgramCache]: Analyzing trace with hash 514595823, now seen corresponding path program 2 times [2024-06-04 15:47:15,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:47:15,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837853491] [2024-06-04 15:47:15,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:47:15,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:47:15,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:47:16,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:47:16,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:47:16,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837853491] [2024-06-04 15:47:16,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837853491] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:47:16,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:47:16,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:47:16,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749541407] [2024-06-04 15:47:16,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:47:16,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:47:16,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:47:16,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:47:16,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:47:16,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:47:16,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 504 transitions, 6791 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:47:16,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:47:16,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:47:16,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:47:17,963 INFO L124 PetriNetUnfolderBase]: 4092/6314 cut-off events. [2024-06-04 15:47:17,963 INFO L125 PetriNetUnfolderBase]: For 813000/813006 co-relation queries the response was YES. [2024-06-04 15:47:18,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53740 conditions, 6314 events. 4092/6314 cut-off events. For 813000/813006 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 36278 event pairs, 842 based on Foata normal form. 10/6321 useless extension candidates. Maximal degree in co-relation 53555. Up to 5993 conditions per place. [2024-06-04 15:47:18,059 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 431 selfloop transitions, 104 changer transitions 0/538 dead transitions. [2024-06-04 15:47:18,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 538 transitions, 8063 flow [2024-06-04 15:47:18,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:47:18,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:47:18,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-04 15:47:18,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3956639566395664 [2024-06-04 15:47:18,060 INFO L175 Difference]: Start difference. First operand has 406 places, 504 transitions, 6791 flow. Second operand 9 states and 146 transitions. [2024-06-04 15:47:18,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 538 transitions, 8063 flow [2024-06-04 15:47:20,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 538 transitions, 7941 flow, removed 53 selfloop flow, removed 3 redundant places. [2024-06-04 15:47:20,424 INFO L231 Difference]: Finished difference. Result has 412 places, 510 transitions, 6991 flow [2024-06-04 15:47:20,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6693, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6991, PETRI_PLACES=412, PETRI_TRANSITIONS=510} [2024-06-04 15:47:20,425 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 370 predicate places. [2024-06-04 15:47:20,425 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 510 transitions, 6991 flow [2024-06-04 15:47:20,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:47:20,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:47:20,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:47:20,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-04 15:47:20,425 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:47:20,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:47:20,425 INFO L85 PathProgramCache]: Analyzing trace with hash 514358487, now seen corresponding path program 3 times [2024-06-04 15:47:20,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:47:20,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137636234] [2024-06-04 15:47:20,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:47:20,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:47:20,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:47:21,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:47:21,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:47:21,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137636234] [2024-06-04 15:47:21,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137636234] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:47:21,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:47:21,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:47:21,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573522450] [2024-06-04 15:47:21,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:47:21,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:47:21,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:47:21,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:47:21,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:47:21,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:47:21,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 510 transitions, 6991 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:47:21,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:47:21,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:47:21,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:47:23,032 INFO L124 PetriNetUnfolderBase]: 4112/6342 cut-off events. [2024-06-04 15:47:23,032 INFO L125 PetriNetUnfolderBase]: For 818021/818027 co-relation queries the response was YES. [2024-06-04 15:47:23,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53955 conditions, 6342 events. 4112/6342 cut-off events. For 818021/818027 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 36425 event pairs, 838 based on Foata normal form. 8/6347 useless extension candidates. Maximal degree in co-relation 53768. Up to 6162 conditions per place. [2024-06-04 15:47:23,134 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 470 selfloop transitions, 69 changer transitions 0/542 dead transitions. [2024-06-04 15:47:23,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 542 transitions, 8265 flow [2024-06-04 15:47:23,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:47:23,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:47:23,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 139 transitions. [2024-06-04 15:47:23,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37669376693766937 [2024-06-04 15:47:23,135 INFO L175 Difference]: Start difference. First operand has 412 places, 510 transitions, 6991 flow. Second operand 9 states and 139 transitions. [2024-06-04 15:47:23,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 542 transitions, 8265 flow [2024-06-04 15:47:26,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 542 transitions, 8015 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-04 15:47:26,788 INFO L231 Difference]: Finished difference. Result has 417 places, 516 transitions, 7015 flow [2024-06-04 15:47:26,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6741, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7015, PETRI_PLACES=417, PETRI_TRANSITIONS=516} [2024-06-04 15:47:26,788 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 375 predicate places. [2024-06-04 15:47:26,788 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 516 transitions, 7015 flow [2024-06-04 15:47:26,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:47:26,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:47:26,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:47:26,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-04 15:47:26,789 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:47:26,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:47:26,789 INFO L85 PathProgramCache]: Analyzing trace with hash 514358673, now seen corresponding path program 3 times [2024-06-04 15:47:26,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:47:26,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387529272] [2024-06-04 15:47:26,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:47:26,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:47:26,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:47:27,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:47:27,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:47:27,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387529272] [2024-06-04 15:47:27,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387529272] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:47:27,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:47:27,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:47:27,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654925609] [2024-06-04 15:47:27,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:47:27,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:47:27,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:47:27,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:47:27,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:47:27,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:47:27,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 516 transitions, 7015 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:47:27,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:47:27,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:47:27,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:47:29,393 INFO L124 PetriNetUnfolderBase]: 4132/6370 cut-off events. [2024-06-04 15:47:29,393 INFO L125 PetriNetUnfolderBase]: For 843893/843899 co-relation queries the response was YES. [2024-06-04 15:47:29,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54110 conditions, 6370 events. 4132/6370 cut-off events. For 843893/843899 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 36581 event pairs, 840 based on Foata normal form. 10/6377 useless extension candidates. Maximal degree in co-relation 53921. Up to 6023 conditions per place. [2024-06-04 15:47:29,490 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 439 selfloop transitions, 107 changer transitions 0/549 dead transitions. [2024-06-04 15:47:29,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 549 transitions, 8281 flow [2024-06-04 15:47:29,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:47:29,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:47:29,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-04 15:47:29,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4065040650406504 [2024-06-04 15:47:29,491 INFO L175 Difference]: Start difference. First operand has 417 places, 516 transitions, 7015 flow. Second operand 9 states and 150 transitions. [2024-06-04 15:47:29,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 549 transitions, 8281 flow [2024-06-04 15:47:32,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 549 transitions, 8075 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-04 15:47:32,554 INFO L231 Difference]: Finished difference. Result has 420 places, 519 transitions, 7097 flow [2024-06-04 15:47:32,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6809, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7097, PETRI_PLACES=420, PETRI_TRANSITIONS=519} [2024-06-04 15:47:32,555 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 378 predicate places. [2024-06-04 15:47:32,555 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 519 transitions, 7097 flow [2024-06-04 15:47:32,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:47:32,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:47:32,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:47:32,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-04 15:47:32,555 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:47:32,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:47:32,555 INFO L85 PathProgramCache]: Analyzing trace with hash 248569137, now seen corresponding path program 1 times [2024-06-04 15:47:32,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:47:32,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447560359] [2024-06-04 15:47:32,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:47:32,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:47:32,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:47:33,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:47:33,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:47:33,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447560359] [2024-06-04 15:47:33,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447560359] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:47:33,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:47:33,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:47:33,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873935516] [2024-06-04 15:47:33,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:47:33,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:47:33,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:47:33,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:47:33,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:47:33,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:47:33,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 519 transitions, 7097 flow. Second operand has 12 states, 12 states have (on average 8.5) internal successors, (102), 12 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:47:33,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:47:33,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:47:33,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:47:35,823 INFO L124 PetriNetUnfolderBase]: 4222/6507 cut-off events. [2024-06-04 15:47:35,823 INFO L125 PetriNetUnfolderBase]: For 922441/922445 co-relation queries the response was YES. [2024-06-04 15:47:35,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56008 conditions, 6507 events. 4222/6507 cut-off events. For 922441/922445 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 37450 event pairs, 749 based on Foata normal form. 12/6516 useless extension candidates. Maximal degree in co-relation 55818. Up to 5937 conditions per place. [2024-06-04 15:47:35,917 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 462 selfloop transitions, 101 changer transitions 0/566 dead transitions. [2024-06-04 15:47:35,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 566 transitions, 8693 flow [2024-06-04 15:47:35,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:47:35,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:47:35,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-04 15:47:35,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42005420054200543 [2024-06-04 15:47:35,918 INFO L175 Difference]: Start difference. First operand has 420 places, 519 transitions, 7097 flow. Second operand 9 states and 155 transitions. [2024-06-04 15:47:35,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 566 transitions, 8693 flow [2024-06-04 15:47:39,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 566 transitions, 8433 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-04 15:47:39,767 INFO L231 Difference]: Finished difference. Result has 423 places, 525 transitions, 7133 flow [2024-06-04 15:47:39,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6837, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7133, PETRI_PLACES=423, PETRI_TRANSITIONS=525} [2024-06-04 15:47:39,767 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 381 predicate places. [2024-06-04 15:47:39,767 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 525 transitions, 7133 flow [2024-06-04 15:47:39,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.5) internal successors, (102), 12 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:47:39,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:47:39,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:47:39,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-04 15:47:39,768 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:47:39,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:47:39,768 INFO L85 PathProgramCache]: Analyzing trace with hash -376127347, now seen corresponding path program 2 times [2024-06-04 15:47:39,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:47:39,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300794926] [2024-06-04 15:47:39,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:47:39,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:47:39,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:47:40,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:47:40,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:47:40,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300794926] [2024-06-04 15:47:40,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300794926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:47:40,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:47:40,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:47:40,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764521478] [2024-06-04 15:47:40,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:47:40,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:47:40,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:47:40,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:47:40,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:47:41,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:47:41,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 525 transitions, 7133 flow. Second operand has 12 states, 12 states have (on average 8.5) internal successors, (102), 12 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:47:41,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:47:41,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:47:41,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:47:43,244 INFO L124 PetriNetUnfolderBase]: 4266/6575 cut-off events. [2024-06-04 15:47:43,244 INFO L125 PetriNetUnfolderBase]: For 962066/962070 co-relation queries the response was YES. [2024-06-04 15:47:43,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56568 conditions, 6575 events. 4266/6575 cut-off events. For 962066/962070 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 37954 event pairs, 879 based on Foata normal form. 16/6588 useless extension candidates. Maximal degree in co-relation 56376. Up to 6217 conditions per place. [2024-06-04 15:47:43,334 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 458 selfloop transitions, 99 changer transitions 0/560 dead transitions. [2024-06-04 15:47:43,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 560 transitions, 8427 flow [2024-06-04 15:47:43,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:47:43,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:47:43,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-04 15:47:43,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4065040650406504 [2024-06-04 15:47:43,335 INFO L175 Difference]: Start difference. First operand has 423 places, 525 transitions, 7133 flow. Second operand 9 states and 150 transitions. [2024-06-04 15:47:43,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 560 transitions, 8427 flow [2024-06-04 15:47:46,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 560 transitions, 8303 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-04 15:47:46,165 INFO L231 Difference]: Finished difference. Result has 428 places, 526 transitions, 7238 flow [2024-06-04 15:47:46,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7009, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7238, PETRI_PLACES=428, PETRI_TRANSITIONS=526} [2024-06-04 15:47:46,166 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 386 predicate places. [2024-06-04 15:47:46,166 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 526 transitions, 7238 flow [2024-06-04 15:47:46,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.5) internal successors, (102), 12 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:47:46,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:47:46,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:47:46,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-04 15:47:46,166 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:47:46,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:47:46,167 INFO L85 PathProgramCache]: Analyzing trace with hash -126785977, now seen corresponding path program 3 times [2024-06-04 15:47:46,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:47:46,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197287494] [2024-06-04 15:47:46,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:47:46,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:47:46,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:47:47,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:47:47,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:47:47,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197287494] [2024-06-04 15:47:47,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197287494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:47:47,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:47:47,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:47:47,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393505194] [2024-06-04 15:47:47,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:47:47,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:47:47,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:47:47,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:47:47,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:47:47,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:47:47,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 526 transitions, 7238 flow. Second operand has 12 states, 12 states have (on average 8.5) internal successors, (102), 12 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:47:47,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:47:47,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:47:47,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:47:49,500 INFO L124 PetriNetUnfolderBase]: 4310/6643 cut-off events. [2024-06-04 15:47:49,500 INFO L125 PetriNetUnfolderBase]: For 958481/958485 co-relation queries the response was YES. [2024-06-04 15:47:49,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57399 conditions, 6643 events. 4310/6643 cut-off events. For 958481/958485 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 38484 event pairs, 877 based on Foata normal form. 12/6652 useless extension candidates. Maximal degree in co-relation 57205. Up to 6235 conditions per place. [2024-06-04 15:47:49,591 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 468 selfloop transitions, 98 changer transitions 0/569 dead transitions. [2024-06-04 15:47:49,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 569 transitions, 8624 flow [2024-06-04 15:47:49,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:47:49,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:47:49,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-04 15:47:49,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2024-06-04 15:47:49,593 INFO L175 Difference]: Start difference. First operand has 428 places, 526 transitions, 7238 flow. Second operand 9 states and 153 transitions. [2024-06-04 15:47:49,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 569 transitions, 8624 flow [2024-06-04 15:47:53,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 569 transitions, 8417 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-04 15:47:53,655 INFO L231 Difference]: Finished difference. Result has 431 places, 531 transitions, 7320 flow [2024-06-04 15:47:53,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7031, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7320, PETRI_PLACES=431, PETRI_TRANSITIONS=531} [2024-06-04 15:47:53,656 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 389 predicate places. [2024-06-04 15:47:53,656 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 531 transitions, 7320 flow [2024-06-04 15:47:53,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.5) internal successors, (102), 12 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:47:53,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:47:53,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:47:53,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-04 15:47:53,656 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:47:53,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:47:53,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1010378206, now seen corresponding path program 1 times [2024-06-04 15:47:53,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:47:53,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644897777] [2024-06-04 15:47:53,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:47:53,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:47:53,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:47:54,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:47:54,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:47:54,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644897777] [2024-06-04 15:47:54,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644897777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:47:54,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:47:54,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:47:54,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717656890] [2024-06-04 15:47:54,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:47:54,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:47:54,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:47:54,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:47:54,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:47:54,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:47:54,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 531 transitions, 7320 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:47:54,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:47:54,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:47:54,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:47:56,564 INFO L124 PetriNetUnfolderBase]: 4365/6721 cut-off events. [2024-06-04 15:47:56,564 INFO L125 PetriNetUnfolderBase]: For 978003/978005 co-relation queries the response was YES. [2024-06-04 15:47:56,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58894 conditions, 6721 events. 4365/6721 cut-off events. For 978003/978005 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 38981 event pairs, 867 based on Foata normal form. 5/6723 useless extension candidates. Maximal degree in co-relation 58698. Up to 6142 conditions per place. [2024-06-04 15:47:56,682 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 443 selfloop transitions, 128 changer transitions 0/574 dead transitions. [2024-06-04 15:47:56,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 574 transitions, 9274 flow [2024-06-04 15:47:56,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:47:56,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:47:56,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-04 15:47:56,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2024-06-04 15:47:56,683 INFO L175 Difference]: Start difference. First operand has 431 places, 531 transitions, 7320 flow. Second operand 9 states and 153 transitions. [2024-06-04 15:47:56,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 574 transitions, 9274 flow [2024-06-04 15:48:00,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 574 transitions, 9067 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-04 15:48:00,774 INFO L231 Difference]: Finished difference. Result has 435 places, 542 transitions, 7725 flow [2024-06-04 15:48:00,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7113, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7725, PETRI_PLACES=435, PETRI_TRANSITIONS=542} [2024-06-04 15:48:00,775 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 393 predicate places. [2024-06-04 15:48:00,775 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 542 transitions, 7725 flow [2024-06-04 15:48:00,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:48:00,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:48:00,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:48:00,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-04 15:48:00,776 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:48:00,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:48:00,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1010586743, now seen corresponding path program 4 times [2024-06-04 15:48:00,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:48:00,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738166253] [2024-06-04 15:48:00,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:48:00,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:48:00,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:48:01,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:48:01,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:48:01,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738166253] [2024-06-04 15:48:01,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738166253] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:48:01,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:48:01,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:48:01,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18654985] [2024-06-04 15:48:01,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:48:01,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:48:01,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:48:01,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:48:01,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:48:01,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:48:01,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 542 transitions, 7725 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:48:01,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:48:01,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:48:01,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:48:03,475 INFO L124 PetriNetUnfolderBase]: 4417/6793 cut-off events. [2024-06-04 15:48:03,475 INFO L125 PetriNetUnfolderBase]: For 1031972/1031974 co-relation queries the response was YES. [2024-06-04 15:48:03,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61174 conditions, 6793 events. 4417/6793 cut-off events. For 1031972/1031974 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 39435 event pairs, 865 based on Foata normal form. 6/6796 useless extension candidates. Maximal degree in co-relation 60976. Up to 6155 conditions per place. [2024-06-04 15:48:03,587 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 449 selfloop transitions, 134 changer transitions 0/586 dead transitions. [2024-06-04 15:48:03,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 586 transitions, 9759 flow [2024-06-04 15:48:03,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:48:03,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:48:03,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-04 15:48:03,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4173441734417344 [2024-06-04 15:48:03,589 INFO L175 Difference]: Start difference. First operand has 435 places, 542 transitions, 7725 flow. Second operand 9 states and 154 transitions. [2024-06-04 15:48:03,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 586 transitions, 9759 flow [2024-06-04 15:48:07,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 586 transitions, 9495 flow, removed 78 selfloop flow, removed 4 redundant places. [2024-06-04 15:48:07,094 INFO L231 Difference]: Finished difference. Result has 440 places, 554 transitions, 8093 flow [2024-06-04 15:48:07,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7485, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8093, PETRI_PLACES=440, PETRI_TRANSITIONS=554} [2024-06-04 15:48:07,094 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 398 predicate places. [2024-06-04 15:48:07,095 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 554 transitions, 8093 flow [2024-06-04 15:48:07,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:48:07,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:48:07,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:48:07,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-04 15:48:07,095 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:48:07,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:48:07,096 INFO L85 PathProgramCache]: Analyzing trace with hash -378173119, now seen corresponding path program 5 times [2024-06-04 15:48:07,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:48:07,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515419705] [2024-06-04 15:48:07,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:48:07,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:48:07,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:48:07,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:48:07,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:48:07,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515419705] [2024-06-04 15:48:07,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515419705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:48:07,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:48:07,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:48:07,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449685147] [2024-06-04 15:48:07,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:48:07,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:48:07,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:48:07,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:48:07,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:48:08,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:48:08,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 554 transitions, 8093 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:48:08,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:48:08,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:48:08,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:48:10,034 INFO L124 PetriNetUnfolderBase]: 4481/6882 cut-off events. [2024-06-04 15:48:10,035 INFO L125 PetriNetUnfolderBase]: For 1086681/1086683 co-relation queries the response was YES. [2024-06-04 15:48:10,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63544 conditions, 6882 events. 4481/6882 cut-off events. For 1086681/1086683 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 39979 event pairs, 870 based on Foata normal form. 6/6885 useless extension candidates. Maximal degree in co-relation 63344. Up to 6206 conditions per place. [2024-06-04 15:48:10,148 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 450 selfloop transitions, 143 changer transitions 0/596 dead transitions. [2024-06-04 15:48:10,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 596 transitions, 10153 flow [2024-06-04 15:48:10,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:48:10,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:48:10,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-04 15:48:10,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4092140921409214 [2024-06-04 15:48:10,149 INFO L175 Difference]: Start difference. First operand has 440 places, 554 transitions, 8093 flow. Second operand 9 states and 151 transitions. [2024-06-04 15:48:10,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 596 transitions, 10153 flow [2024-06-04 15:48:15,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 596 transitions, 9839 flow, removed 103 selfloop flow, removed 4 redundant places. [2024-06-04 15:48:15,347 INFO L231 Difference]: Finished difference. Result has 446 places, 566 transitions, 8421 flow [2024-06-04 15:48:15,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7815, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=554, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8421, PETRI_PLACES=446, PETRI_TRANSITIONS=566} [2024-06-04 15:48:15,347 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 404 predicate places. [2024-06-04 15:48:15,348 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 566 transitions, 8421 flow [2024-06-04 15:48:15,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:48:15,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:48:15,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:48:15,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-04 15:48:15,348 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:48:15,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:48:15,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1010287841, now seen corresponding path program 1 times [2024-06-04 15:48:15,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:48:15,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200788674] [2024-06-04 15:48:15,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:48:15,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:48:15,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:48:16,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:48:16,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:48:16,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200788674] [2024-06-04 15:48:16,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200788674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:48:16,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:48:16,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:48:16,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616666335] [2024-06-04 15:48:16,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:48:16,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:48:16,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:48:16,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:48:16,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:48:16,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:48:16,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 566 transitions, 8421 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:48:16,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:48:16,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:48:16,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:48:18,210 INFO L124 PetriNetUnfolderBase]: 4507/6916 cut-off events. [2024-06-04 15:48:18,210 INFO L125 PetriNetUnfolderBase]: For 1105013/1105017 co-relation queries the response was YES. [2024-06-04 15:48:18,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64602 conditions, 6916 events. 4507/6916 cut-off events. For 1105013/1105017 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 40130 event pairs, 899 based on Foata normal form. 6/6919 useless extension candidates. Maximal degree in co-relation 64399. Up to 6726 conditions per place. [2024-06-04 15:48:18,319 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 526 selfloop transitions, 72 changer transitions 0/601 dead transitions. [2024-06-04 15:48:18,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 601 transitions, 10143 flow [2024-06-04 15:48:18,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:48:18,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:48:18,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 145 transitions. [2024-06-04 15:48:18,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39295392953929537 [2024-06-04 15:48:18,320 INFO L175 Difference]: Start difference. First operand has 446 places, 566 transitions, 8421 flow. Second operand 9 states and 145 transitions. [2024-06-04 15:48:18,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 601 transitions, 10143 flow [2024-06-04 15:48:23,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 601 transitions, 9832 flow, removed 55 selfloop flow, removed 5 redundant places. [2024-06-04 15:48:23,072 INFO L231 Difference]: Finished difference. Result has 450 places, 572 transitions, 8470 flow [2024-06-04 15:48:23,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8110, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8470, PETRI_PLACES=450, PETRI_TRANSITIONS=572} [2024-06-04 15:48:23,072 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 408 predicate places. [2024-06-04 15:48:23,072 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 572 transitions, 8470 flow [2024-06-04 15:48:23,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:48:23,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:48:23,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:48:23,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-04 15:48:23,073 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:48:23,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:48:23,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1144470992, now seen corresponding path program 2 times [2024-06-04 15:48:23,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:48:23,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684558610] [2024-06-04 15:48:23,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:48:23,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:48:23,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:48:24,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:48:24,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:48:24,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684558610] [2024-06-04 15:48:24,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684558610] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:48:24,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:48:24,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:48:24,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986314415] [2024-06-04 15:48:24,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:48:24,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:48:24,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:48:24,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:48:24,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:48:24,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:48:24,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 572 transitions, 8470 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:48:24,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:48:24,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:48:24,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:48:26,254 INFO L124 PetriNetUnfolderBase]: 4498/6906 cut-off events. [2024-06-04 15:48:26,254 INFO L125 PetriNetUnfolderBase]: For 1114489/1114491 co-relation queries the response was YES. [2024-06-04 15:48:26,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64218 conditions, 6906 events. 4498/6906 cut-off events. For 1114489/1114491 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 40154 event pairs, 872 based on Foata normal form. 5/6908 useless extension candidates. Maximal degree in co-relation 64014. Up to 6388 conditions per place. [2024-06-04 15:48:26,363 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 464 selfloop transitions, 135 changer transitions 0/602 dead transitions. [2024-06-04 15:48:26,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 602 transitions, 10237 flow [2024-06-04 15:48:26,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:48:26,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:48:26,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-04 15:48:26,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4037940379403794 [2024-06-04 15:48:26,364 INFO L175 Difference]: Start difference. First operand has 450 places, 572 transitions, 8470 flow. Second operand 9 states and 149 transitions. [2024-06-04 15:48:26,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 602 transitions, 10237 flow [2024-06-04 15:48:31,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 602 transitions, 10049 flow, removed 59 selfloop flow, removed 5 redundant places. [2024-06-04 15:48:31,515 INFO L231 Difference]: Finished difference. Result has 454 places, 573 transitions, 8608 flow [2024-06-04 15:48:31,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8282, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8608, PETRI_PLACES=454, PETRI_TRANSITIONS=573} [2024-06-04 15:48:31,516 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 412 predicate places. [2024-06-04 15:48:31,516 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 573 transitions, 8608 flow [2024-06-04 15:48:31,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:48:31,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:48:31,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:48:31,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-04 15:48:31,516 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:48:31,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:48:31,516 INFO L85 PathProgramCache]: Analyzing trace with hash -383834029, now seen corresponding path program 6 times [2024-06-04 15:48:31,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:48:31,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769530215] [2024-06-04 15:48:31,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:48:31,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:48:31,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:48:32,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:48:32,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:48:32,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769530215] [2024-06-04 15:48:32,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769530215] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:48:32,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:48:32,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:48:32,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329557544] [2024-06-04 15:48:32,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:48:32,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:48:32,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:48:32,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:48:32,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:48:32,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:48:32,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 573 transitions, 8608 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:48:32,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:48:32,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:48:32,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:48:34,564 INFO L124 PetriNetUnfolderBase]: 4506/6917 cut-off events. [2024-06-04 15:48:34,564 INFO L125 PetriNetUnfolderBase]: For 1128982/1128984 co-relation queries the response was YES. [2024-06-04 15:48:34,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64841 conditions, 6917 events. 4506/6917 cut-off events. For 1128982/1128984 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 40153 event pairs, 881 based on Foata normal form. 4/6918 useless extension candidates. Maximal degree in co-relation 64635. Up to 6242 conditions per place. [2024-06-04 15:48:34,676 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 463 selfloop transitions, 146 changer transitions 0/612 dead transitions. [2024-06-04 15:48:34,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 612 transitions, 10797 flow [2024-06-04 15:48:34,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:48:34,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:48:34,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-04 15:48:34,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42005420054200543 [2024-06-04 15:48:34,677 INFO L175 Difference]: Start difference. First operand has 454 places, 573 transitions, 8608 flow. Second operand 9 states and 155 transitions. [2024-06-04 15:48:34,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 612 transitions, 10797 flow [2024-06-04 15:48:39,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 612 transitions, 10473 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-04 15:48:39,368 INFO L231 Difference]: Finished difference. Result has 458 places, 579 transitions, 8805 flow [2024-06-04 15:48:39,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8299, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=573, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8805, PETRI_PLACES=458, PETRI_TRANSITIONS=579} [2024-06-04 15:48:39,369 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 416 predicate places. [2024-06-04 15:48:39,369 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 579 transitions, 8805 flow [2024-06-04 15:48:39,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:48:39,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:48:39,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:48:39,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-04 15:48:39,369 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:48:39,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:48:39,369 INFO L85 PathProgramCache]: Analyzing trace with hash -383714059, now seen corresponding path program 7 times [2024-06-04 15:48:39,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:48:39,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860264596] [2024-06-04 15:48:39,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:48:39,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:48:39,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:48:40,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:48:40,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:48:40,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860264596] [2024-06-04 15:48:40,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860264596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:48:40,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:48:40,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:48:40,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619540097] [2024-06-04 15:48:40,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:48:40,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:48:40,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:48:40,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:48:40,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:48:40,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:48:40,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 579 transitions, 8805 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:48:40,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:48:40,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:48:40,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:48:42,289 INFO L124 PetriNetUnfolderBase]: 4526/6945 cut-off events. [2024-06-04 15:48:42,289 INFO L125 PetriNetUnfolderBase]: For 1148113/1148115 co-relation queries the response was YES. [2024-06-04 15:48:42,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65315 conditions, 6945 events. 4526/6945 cut-off events. For 1148113/1148115 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 40308 event pairs, 879 based on Foata normal form. 4/6946 useless extension candidates. Maximal degree in co-relation 65107. Up to 6623 conditions per place. [2024-06-04 15:48:42,422 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 516 selfloop transitions, 93 changer transitions 0/612 dead transitions. [2024-06-04 15:48:42,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 612 transitions, 10251 flow [2024-06-04 15:48:42,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:48:42,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:48:42,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-06-04 15:48:42,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3902439024390244 [2024-06-04 15:48:42,423 INFO L175 Difference]: Start difference. First operand has 458 places, 579 transitions, 8805 flow. Second operand 9 states and 144 transitions. [2024-06-04 15:48:42,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 612 transitions, 10251 flow [2024-06-04 15:48:47,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 612 transitions, 9942 flow, removed 54 selfloop flow, removed 5 redundant places. [2024-06-04 15:48:47,705 INFO L231 Difference]: Finished difference. Result has 462 places, 585 transitions, 8838 flow [2024-06-04 15:48:47,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8521, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=579, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8838, PETRI_PLACES=462, PETRI_TRANSITIONS=585} [2024-06-04 15:48:47,706 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 420 predicate places. [2024-06-04 15:48:47,706 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 585 transitions, 8838 flow [2024-06-04 15:48:47,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:48:47,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:48:47,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:48:47,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-04 15:48:47,707 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:48:47,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:48:47,707 INFO L85 PathProgramCache]: Analyzing trace with hash -383713873, now seen corresponding path program 4 times [2024-06-04 15:48:47,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:48:47,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075941724] [2024-06-04 15:48:47,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:48:47,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:48:47,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:48:48,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:48:48,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:48:48,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075941724] [2024-06-04 15:48:48,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075941724] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:48:48,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:48:48,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:48:48,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281085118] [2024-06-04 15:48:48,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:48:48,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:48:48,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:48:48,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:48:48,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:48:48,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:48:48,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 585 transitions, 8838 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:48:48,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:48:48,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:48:48,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:48:50,657 INFO L124 PetriNetUnfolderBase]: 4610/7061 cut-off events. [2024-06-04 15:48:50,657 INFO L125 PetriNetUnfolderBase]: For 1233587/1233589 co-relation queries the response was YES. [2024-06-04 15:48:50,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67263 conditions, 7061 events. 4610/7061 cut-off events. For 1233587/1233589 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 40998 event pairs, 905 based on Foata normal form. 6/7064 useless extension candidates. Maximal degree in co-relation 67054. Up to 6355 conditions per place. [2024-06-04 15:48:50,791 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 479 selfloop transitions, 147 changer transitions 0/629 dead transitions. [2024-06-04 15:48:50,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 629 transitions, 10936 flow [2024-06-04 15:48:50,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:48:50,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:48:50,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-04 15:48:50,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42005420054200543 [2024-06-04 15:48:50,793 INFO L175 Difference]: Start difference. First operand has 462 places, 585 transitions, 8838 flow. Second operand 9 states and 155 transitions. [2024-06-04 15:48:50,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 629 transitions, 10936 flow [2024-06-04 15:48:55,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 629 transitions, 10692 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-04 15:48:55,887 INFO L231 Difference]: Finished difference. Result has 466 places, 595 transitions, 9271 flow [2024-06-04 15:48:55,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8594, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=585, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9271, PETRI_PLACES=466, PETRI_TRANSITIONS=595} [2024-06-04 15:48:55,888 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 424 predicate places. [2024-06-04 15:48:55,888 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 595 transitions, 9271 flow [2024-06-04 15:48:55,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:48:55,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:48:55,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:48:55,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-04 15:48:55,889 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:48:55,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:48:55,889 INFO L85 PathProgramCache]: Analyzing trace with hash -374459443, now seen corresponding path program 5 times [2024-06-04 15:48:55,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:48:55,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664276815] [2024-06-04 15:48:55,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:48:55,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:48:55,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:48:56,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:48:56,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:48:56,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664276815] [2024-06-04 15:48:56,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664276815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:48:56,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:48:56,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:48:56,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130350575] [2024-06-04 15:48:56,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:48:56,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:48:56,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:48:56,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:48:56,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:48:56,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:48:56,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 595 transitions, 9271 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:48:56,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:48:56,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:48:56,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:48:58,889 INFO L124 PetriNetUnfolderBase]: 4693/7176 cut-off events. [2024-06-04 15:48:58,889 INFO L125 PetriNetUnfolderBase]: For 1303372/1303374 co-relation queries the response was YES. [2024-06-04 15:48:58,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70123 conditions, 7176 events. 4693/7176 cut-off events. For 1303372/1303374 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 41677 event pairs, 903 based on Foata normal form. 6/7179 useless extension candidates. Maximal degree in co-relation 69912. Up to 6420 conditions per place. [2024-06-04 15:48:59,029 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 486 selfloop transitions, 154 changer transitions 0/643 dead transitions. [2024-06-04 15:48:59,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 643 transitions, 11686 flow [2024-06-04 15:48:59,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:48:59,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:48:59,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-04 15:48:59,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42005420054200543 [2024-06-04 15:48:59,030 INFO L175 Difference]: Start difference. First operand has 466 places, 595 transitions, 9271 flow. Second operand 9 states and 155 transitions. [2024-06-04 15:48:59,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 643 transitions, 11686 flow [2024-06-04 15:49:04,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 643 transitions, 11416 flow, removed 91 selfloop flow, removed 4 redundant places. [2024-06-04 15:49:04,497 INFO L231 Difference]: Finished difference. Result has 472 places, 609 transitions, 9648 flow [2024-06-04 15:49:04,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9065, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9648, PETRI_PLACES=472, PETRI_TRANSITIONS=609} [2024-06-04 15:49:04,498 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 430 predicate places. [2024-06-04 15:49:04,498 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 609 transitions, 9648 flow [2024-06-04 15:49:04,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:49:04,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:49:04,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:49:04,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-04 15:49:04,498 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:49:04,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:49:04,499 INFO L85 PathProgramCache]: Analyzing trace with hash -374448097, now seen corresponding path program 2 times [2024-06-04 15:49:04,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:49:04,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774710315] [2024-06-04 15:49:04,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:49:04,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:49:04,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:49:05,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:49:05,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:49:05,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774710315] [2024-06-04 15:49:05,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774710315] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:49:05,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:49:05,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:49:05,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367363410] [2024-06-04 15:49:05,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:49:05,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:49:05,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:49:05,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:49:05,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:49:05,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:49:05,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 609 transitions, 9648 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:49:05,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:49:05,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:49:05,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:49:07,560 INFO L124 PetriNetUnfolderBase]: 4719/7210 cut-off events. [2024-06-04 15:49:07,560 INFO L125 PetriNetUnfolderBase]: For 1320648/1320652 co-relation queries the response was YES. [2024-06-04 15:49:07,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70746 conditions, 7210 events. 4719/7210 cut-off events. For 1320648/1320652 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 41858 event pairs, 936 based on Foata normal form. 6/7213 useless extension candidates. Maximal degree in co-relation 70532. Up to 7064 conditions per place. [2024-06-04 15:49:07,691 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 576 selfloop transitions, 65 changer transitions 0/644 dead transitions. [2024-06-04 15:49:07,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 644 transitions, 11438 flow [2024-06-04 15:49:07,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:49:07,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:49:07,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 163 transitions. [2024-06-04 15:49:07,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3614190687361419 [2024-06-04 15:49:07,693 INFO L175 Difference]: Start difference. First operand has 472 places, 609 transitions, 9648 flow. Second operand 11 states and 163 transitions. [2024-06-04 15:49:07,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 644 transitions, 11438 flow [2024-06-04 15:49:12,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 644 transitions, 11195 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-06-04 15:49:12,758 INFO L231 Difference]: Finished difference. Result has 479 places, 615 transitions, 9719 flow [2024-06-04 15:49:12,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9405, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=609, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=547, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9719, PETRI_PLACES=479, PETRI_TRANSITIONS=615} [2024-06-04 15:49:12,759 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 437 predicate places. [2024-06-04 15:49:12,759 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 615 transitions, 9719 flow [2024-06-04 15:49:12,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:49:12,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:49:12,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:49:12,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-04 15:49:12,760 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:49:12,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:49:12,760 INFO L85 PathProgramCache]: Analyzing trace with hash -374448283, now seen corresponding path program 6 times [2024-06-04 15:49:12,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:49:12,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475500048] [2024-06-04 15:49:12,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:49:12,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:49:12,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:49:13,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:49:13,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:49:13,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475500048] [2024-06-04 15:49:13,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475500048] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:49:13,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:49:13,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:49:13,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325284398] [2024-06-04 15:49:13,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:49:13,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:49:13,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:49:13,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:49:13,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:49:13,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:49:13,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 615 transitions, 9719 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:49:13,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:49:13,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:49:13,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:49:15,772 INFO L124 PetriNetUnfolderBase]: 4707/7196 cut-off events. [2024-06-04 15:49:15,773 INFO L125 PetriNetUnfolderBase]: For 1327993/1327995 co-relation queries the response was YES. [2024-06-04 15:49:15,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69967 conditions, 7196 events. 4707/7196 cut-off events. For 1327993/1327995 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 41786 event pairs, 902 based on Foata normal form. 6/7199 useless extension candidates. Maximal degree in co-relation 69752. Up to 6448 conditions per place. [2024-06-04 15:49:15,908 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 487 selfloop transitions, 157 changer transitions 0/647 dead transitions. [2024-06-04 15:49:15,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 647 transitions, 11591 flow [2024-06-04 15:49:15,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:49:15,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:49:15,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-04 15:49:15,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41192411924119243 [2024-06-04 15:49:15,910 INFO L175 Difference]: Start difference. First operand has 479 places, 615 transitions, 9719 flow. Second operand 9 states and 152 transitions. [2024-06-04 15:49:15,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 647 transitions, 11591 flow [2024-06-04 15:49:21,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 480 places, 647 transitions, 11385 flow, removed 66 selfloop flow, removed 7 redundant places. [2024-06-04 15:49:21,236 INFO L231 Difference]: Finished difference. Result has 482 places, 616 transitions, 9863 flow [2024-06-04 15:49:21,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9513, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=615, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9863, PETRI_PLACES=482, PETRI_TRANSITIONS=616} [2024-06-04 15:49:21,236 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 440 predicate places. [2024-06-04 15:49:21,236 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 616 transitions, 9863 flow [2024-06-04 15:49:21,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:49:21,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:49:21,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:49:21,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-04 15:49:21,237 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:49:21,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:49:21,237 INFO L85 PathProgramCache]: Analyzing trace with hash -374453832, now seen corresponding path program 3 times [2024-06-04 15:49:21,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:49:21,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572100467] [2024-06-04 15:49:21,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:49:21,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:49:21,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:49:22,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:49:22,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:49:22,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572100467] [2024-06-04 15:49:22,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572100467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:49:22,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:49:22,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:49:22,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304914525] [2024-06-04 15:49:22,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:49:22,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:49:22,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:49:22,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:49:22,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:49:22,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:49:22,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 616 transitions, 9863 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:49:22,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:49:22,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:49:22,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:49:24,507 INFO L124 PetriNetUnfolderBase]: 4766/7278 cut-off events. [2024-06-04 15:49:24,507 INFO L125 PetriNetUnfolderBase]: For 1376501/1376503 co-relation queries the response was YES. [2024-06-04 15:49:24,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72002 conditions, 7278 events. 4766/7278 cut-off events. For 1376501/1376503 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 42367 event pairs, 899 based on Foata normal form. 5/7280 useless extension candidates. Maximal degree in co-relation 71784. Up to 6885 conditions per place. [2024-06-04 15:49:24,648 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 535 selfloop transitions, 116 changer transitions 0/654 dead transitions. [2024-06-04 15:49:24,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 654 transitions, 11853 flow [2024-06-04 15:49:24,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:49:24,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:49:24,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-06-04 15:49:24,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3902439024390244 [2024-06-04 15:49:24,649 INFO L175 Difference]: Start difference. First operand has 482 places, 616 transitions, 9863 flow. Second operand 9 states and 144 transitions. [2024-06-04 15:49:24,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 654 transitions, 11853 flow [2024-06-04 15:49:30,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 654 transitions, 11650 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-04 15:49:30,387 INFO L231 Difference]: Finished difference. Result has 488 places, 629 transitions, 10332 flow [2024-06-04 15:49:30,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9660, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=616, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=500, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10332, PETRI_PLACES=488, PETRI_TRANSITIONS=629} [2024-06-04 15:49:30,387 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 446 predicate places. [2024-06-04 15:49:30,387 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 629 transitions, 10332 flow [2024-06-04 15:49:30,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:49:30,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:49:30,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:49:30,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-04 15:49:30,388 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:49:30,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:49:30,389 INFO L85 PathProgramCache]: Analyzing trace with hash -374454049, now seen corresponding path program 8 times [2024-06-04 15:49:30,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:49:30,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997348632] [2024-06-04 15:49:30,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:49:30,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:49:30,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:49:31,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:49:31,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:49:31,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997348632] [2024-06-04 15:49:31,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997348632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:49:31,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:49:31,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:49:31,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000239569] [2024-06-04 15:49:31,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:49:31,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:49:31,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:49:31,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:49:31,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:49:31,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:49:31,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 629 transitions, 10332 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:49:31,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:49:31,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:49:31,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:49:33,405 INFO L124 PetriNetUnfolderBase]: 4770/7284 cut-off events. [2024-06-04 15:49:33,405 INFO L125 PetriNetUnfolderBase]: For 1393549/1393551 co-relation queries the response was YES. [2024-06-04 15:49:33,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72011 conditions, 7284 events. 4770/7284 cut-off events. For 1393549/1393551 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 42348 event pairs, 899 based on Foata normal form. 6/7287 useless extension candidates. Maximal degree in co-relation 71791. Up to 6890 conditions per place. [2024-06-04 15:49:33,538 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 539 selfloop transitions, 115 changer transitions 0/657 dead transitions. [2024-06-04 15:49:33,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 657 transitions, 12009 flow [2024-06-04 15:49:33,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:49:33,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:49:33,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 145 transitions. [2024-06-04 15:49:33,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39295392953929537 [2024-06-04 15:49:33,539 INFO L175 Difference]: Start difference. First operand has 488 places, 629 transitions, 10332 flow. Second operand 9 states and 145 transitions. [2024-06-04 15:49:33,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 657 transitions, 12009 flow [2024-06-04 15:49:38,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 657 transitions, 11749 flow, removed 42 selfloop flow, removed 7 redundant places. [2024-06-04 15:49:38,419 INFO L231 Difference]: Finished difference. Result has 490 places, 632 transitions, 10377 flow [2024-06-04 15:49:38,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10072, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=514, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10377, PETRI_PLACES=490, PETRI_TRANSITIONS=632} [2024-06-04 15:49:38,420 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 448 predicate places. [2024-06-04 15:49:38,420 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 632 transitions, 10377 flow [2024-06-04 15:49:38,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:49:38,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:49:38,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:49:38,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-04 15:49:38,421 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:49:38,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:49:38,421 INFO L85 PathProgramCache]: Analyzing trace with hash -374453677, now seen corresponding path program 3 times [2024-06-04 15:49:38,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:49:38,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144343680] [2024-06-04 15:49:38,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:49:38,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:49:38,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:49:39,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:49:39,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:49:39,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144343680] [2024-06-04 15:49:39,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144343680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:49:39,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:49:39,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:49:39,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449025993] [2024-06-04 15:49:39,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:49:39,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:49:39,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:49:39,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:49:39,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:49:39,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:49:39,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 632 transitions, 10377 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:49:39,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:49:39,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:49:39,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:49:41,491 INFO L124 PetriNetUnfolderBase]: 4764/7274 cut-off events. [2024-06-04 15:49:41,491 INFO L125 PetriNetUnfolderBase]: For 1388881/1388885 co-relation queries the response was YES. [2024-06-04 15:49:41,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71766 conditions, 7274 events. 4764/7274 cut-off events. For 1388881/1388885 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 42305 event pairs, 936 based on Foata normal form. 6/7277 useless extension candidates. Maximal degree in co-relation 71547. Up to 7131 conditions per place. [2024-06-04 15:49:41,618 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 591 selfloop transitions, 64 changer transitions 0/658 dead transitions. [2024-06-04 15:49:41,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 658 transitions, 11789 flow [2024-06-04 15:49:41,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:49:41,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:49:41,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2024-06-04 15:49:41,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38482384823848237 [2024-06-04 15:49:41,620 INFO L175 Difference]: Start difference. First operand has 490 places, 632 transitions, 10377 flow. Second operand 9 states and 142 transitions. [2024-06-04 15:49:41,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 658 transitions, 11789 flow [2024-06-04 15:49:46,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 658 transitions, 11425 flow, removed 74 selfloop flow, removed 7 redundant places. [2024-06-04 15:49:46,872 INFO L231 Difference]: Finished difference. Result has 492 places, 632 transitions, 10147 flow [2024-06-04 15:49:46,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10013, PETRI_DIFFERENCE_MINUEND_PLACES=483, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=632, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=568, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10147, PETRI_PLACES=492, PETRI_TRANSITIONS=632} [2024-06-04 15:49:46,873 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 450 predicate places. [2024-06-04 15:49:46,873 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 632 transitions, 10147 flow [2024-06-04 15:49:46,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:49:46,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:49:46,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:49:46,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-04 15:49:46,874 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:49:46,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:49:46,874 INFO L85 PathProgramCache]: Analyzing trace with hash -374459629, now seen corresponding path program 9 times [2024-06-04 15:49:46,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:49:46,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631890007] [2024-06-04 15:49:46,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:49:46,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:49:46,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:49:47,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:49:47,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:49:47,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631890007] [2024-06-04 15:49:47,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631890007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:49:47,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:49:47,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:49:47,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182875450] [2024-06-04 15:49:47,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:49:47,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:49:47,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:49:47,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:49:47,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:49:47,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:49:47,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 632 transitions, 10147 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:49:47,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:49:47,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:49:47,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:49:50,027 INFO L124 PetriNetUnfolderBase]: 4756/7265 cut-off events. [2024-06-04 15:49:50,027 INFO L125 PetriNetUnfolderBase]: For 1393157/1393159 co-relation queries the response was YES. [2024-06-04 15:49:50,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71175 conditions, 7265 events. 4756/7265 cut-off events. For 1393157/1393159 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 42279 event pairs, 896 based on Foata normal form. 4/7266 useless extension candidates. Maximal degree in co-relation 70955. Up to 6877 conditions per place. [2024-06-04 15:49:50,152 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 541 selfloop transitions, 117 changer transitions 0/661 dead transitions. [2024-06-04 15:49:50,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 661 transitions, 11789 flow [2024-06-04 15:49:50,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:49:50,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:49:50,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 169 transitions. [2024-06-04 15:49:50,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37472283813747226 [2024-06-04 15:49:50,153 INFO L175 Difference]: Start difference. First operand has 492 places, 632 transitions, 10147 flow. Second operand 11 states and 169 transitions. [2024-06-04 15:49:50,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 661 transitions, 11789 flow [2024-06-04 15:49:55,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 494 places, 661 transitions, 11661 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-04 15:49:55,265 INFO L231 Difference]: Finished difference. Result has 495 places, 632 transitions, 10259 flow [2024-06-04 15:49:55,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10019, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=632, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10259, PETRI_PLACES=495, PETRI_TRANSITIONS=632} [2024-06-04 15:49:55,265 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 453 predicate places. [2024-06-04 15:49:55,266 INFO L495 AbstractCegarLoop]: Abstraction has has 495 places, 632 transitions, 10259 flow [2024-06-04 15:49:55,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:49:55,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:49:55,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:49:55,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-04 15:49:55,266 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:49:55,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:49:55,266 INFO L85 PathProgramCache]: Analyzing trace with hash 821650381, now seen corresponding path program 7 times [2024-06-04 15:49:55,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:49:55,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714140784] [2024-06-04 15:49:55,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:49:55,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:49:55,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:49:56,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:49:56,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:49:56,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714140784] [2024-06-04 15:49:56,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714140784] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:49:56,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:49:56,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:49:56,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683415830] [2024-06-04 15:49:56,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:49:56,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:49:56,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:49:56,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:49:56,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:49:56,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:49:56,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 495 places, 632 transitions, 10259 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:49:56,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:49:56,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:49:56,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:49:58,227 INFO L124 PetriNetUnfolderBase]: 4897/7460 cut-off events. [2024-06-04 15:49:58,227 INFO L125 PetriNetUnfolderBase]: For 1525568/1525570 co-relation queries the response was YES. [2024-06-04 15:49:58,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74799 conditions, 7460 events. 4897/7460 cut-off events. For 1525568/1525570 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 43419 event pairs, 946 based on Foata normal form. 6/7463 useless extension candidates. Maximal degree in co-relation 74578. Up to 6957 conditions per place. [2024-06-04 15:49:58,363 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 565 selfloop transitions, 118 changer transitions 0/686 dead transitions. [2024-06-04 15:49:58,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 686 transitions, 12745 flow [2024-06-04 15:49:58,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:49:58,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:49:58,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-04 15:49:58,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4065040650406504 [2024-06-04 15:49:58,364 INFO L175 Difference]: Start difference. First operand has 495 places, 632 transitions, 10259 flow. Second operand 9 states and 150 transitions. [2024-06-04 15:49:58,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 686 transitions, 12745 flow [2024-06-04 15:50:03,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 494 places, 686 transitions, 12427 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-04 15:50:03,714 INFO L231 Difference]: Finished difference. Result has 497 places, 652 transitions, 10755 flow [2024-06-04 15:50:03,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9959, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=632, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=517, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10755, PETRI_PLACES=497, PETRI_TRANSITIONS=652} [2024-06-04 15:50:03,714 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 455 predicate places. [2024-06-04 15:50:03,714 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 652 transitions, 10755 flow [2024-06-04 15:50:03,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:50:03,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:50:03,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:50:03,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-04 15:50:03,715 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:50:03,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:50:03,715 INFO L85 PathProgramCache]: Analyzing trace with hash 828893221, now seen corresponding path program 8 times [2024-06-04 15:50:03,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:50:03,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483632337] [2024-06-04 15:50:03,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:50:03,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:50:03,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:50:04,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:50:04,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:50:04,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483632337] [2024-06-04 15:50:04,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483632337] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:50:04,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:50:04,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:50:04,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695470898] [2024-06-04 15:50:04,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:50:04,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:50:04,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:50:04,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:50:04,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:50:04,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:50:04,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 652 transitions, 10755 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:50:04,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:50:04,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:50:04,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:50:06,762 INFO L124 PetriNetUnfolderBase]: 4917/7488 cut-off events. [2024-06-04 15:50:06,762 INFO L125 PetriNetUnfolderBase]: For 1551203/1551205 co-relation queries the response was YES. [2024-06-04 15:50:06,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75536 conditions, 7488 events. 4917/7488 cut-off events. For 1551203/1551205 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 43588 event pairs, 966 based on Foata normal form. 6/7491 useless extension candidates. Maximal degree in co-relation 75312. Up to 7164 conditions per place. [2024-06-04 15:50:06,895 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 579 selfloop transitions, 101 changer transitions 0/683 dead transitions. [2024-06-04 15:50:06,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 683 transitions, 12325 flow [2024-06-04 15:50:06,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:50:06,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:50:06,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-06-04 15:50:06,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875338753387534 [2024-06-04 15:50:06,896 INFO L175 Difference]: Start difference. First operand has 497 places, 652 transitions, 10755 flow. Second operand 9 states and 143 transitions. [2024-06-04 15:50:06,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 683 transitions, 12325 flow [2024-06-04 15:50:12,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 683 transitions, 12163 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-06-04 15:50:12,639 INFO L231 Difference]: Finished difference. Result has 503 places, 657 transitions, 10921 flow [2024-06-04 15:50:12,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10595, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=551, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10921, PETRI_PLACES=503, PETRI_TRANSITIONS=657} [2024-06-04 15:50:12,639 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 461 predicate places. [2024-06-04 15:50:12,640 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 657 transitions, 10921 flow [2024-06-04 15:50:12,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:50:12,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:50:12,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:50:12,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-04 15:50:12,640 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:50:12,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:50:12,640 INFO L85 PathProgramCache]: Analyzing trace with hash 55357685, now seen corresponding path program 10 times [2024-06-04 15:50:12,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:50:12,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188218753] [2024-06-04 15:50:12,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:50:12,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:50:12,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:50:13,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:50:13,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:50:13,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188218753] [2024-06-04 15:50:13,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188218753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:50:13,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:50:13,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:50:13,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219185401] [2024-06-04 15:50:13,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:50:13,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:50:13,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:50:13,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:50:13,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:50:13,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:50:13,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 657 transitions, 10921 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:50:13,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:50:13,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:50:13,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:50:15,670 INFO L124 PetriNetUnfolderBase]: 5005/7610 cut-off events. [2024-06-04 15:50:15,670 INFO L125 PetriNetUnfolderBase]: For 1630631/1630633 co-relation queries the response was YES. [2024-06-04 15:50:15,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78348 conditions, 7610 events. 5005/7610 cut-off events. For 1630631/1630633 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 44332 event pairs, 958 based on Foata normal form. 6/7613 useless extension candidates. Maximal degree in co-relation 78121. Up to 7322 conditions per place. [2024-06-04 15:50:15,804 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 606 selfloop transitions, 91 changer transitions 0/700 dead transitions. [2024-06-04 15:50:15,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 700 transitions, 13228 flow [2024-06-04 15:50:15,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:50:15,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:50:15,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-06-04 15:50:15,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3821138211382114 [2024-06-04 15:50:15,805 INFO L175 Difference]: Start difference. First operand has 503 places, 657 transitions, 10921 flow. Second operand 9 states and 141 transitions. [2024-06-04 15:50:15,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 700 transitions, 13228 flow [2024-06-04 15:50:22,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 700 transitions, 13042 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-06-04 15:50:22,080 INFO L231 Difference]: Finished difference. Result has 510 places, 675 transitions, 11474 flow [2024-06-04 15:50:22,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10735, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=657, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=566, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11474, PETRI_PLACES=510, PETRI_TRANSITIONS=675} [2024-06-04 15:50:22,080 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 468 predicate places. [2024-06-04 15:50:22,080 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 675 transitions, 11474 flow [2024-06-04 15:50:22,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:50:22,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:50:22,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:50:22,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-04 15:50:22,081 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:50:22,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:50:22,081 INFO L85 PathProgramCache]: Analyzing trace with hash 818168461, now seen corresponding path program 9 times [2024-06-04 15:50:22,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:50:22,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127813082] [2024-06-04 15:50:22,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:50:22,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:50:22,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:50:22,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:50:22,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:50:22,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127813082] [2024-06-04 15:50:22,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127813082] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:50:22,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:50:22,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:50:22,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151841269] [2024-06-04 15:50:22,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:50:22,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:50:22,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:50:22,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:50:22,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:50:22,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:50:22,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 675 transitions, 11474 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:50:22,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:50:22,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:50:22,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:50:25,107 INFO L124 PetriNetUnfolderBase]: 5025/7638 cut-off events. [2024-06-04 15:50:25,107 INFO L125 PetriNetUnfolderBase]: For 1662071/1662073 co-relation queries the response was YES. [2024-06-04 15:50:25,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78949 conditions, 7638 events. 5025/7638 cut-off events. For 1662071/1662073 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 44435 event pairs, 985 based on Foata normal form. 6/7641 useless extension candidates. Maximal degree in co-relation 78719. Up to 7316 conditions per place. [2024-06-04 15:50:25,247 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 605 selfloop transitions, 96 changer transitions 0/704 dead transitions. [2024-06-04 15:50:25,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 704 transitions, 13082 flow [2024-06-04 15:50:25,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:50:25,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:50:25,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-06-04 15:50:25,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875338753387534 [2024-06-04 15:50:25,248 INFO L175 Difference]: Start difference. First operand has 510 places, 675 transitions, 11474 flow. Second operand 9 states and 143 transitions. [2024-06-04 15:50:25,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 704 transitions, 13082 flow [2024-06-04 15:50:31,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 704 transitions, 12773 flow, removed 68 selfloop flow, removed 7 redundant places. [2024-06-04 15:50:31,445 INFO L231 Difference]: Finished difference. Result has 514 places, 681 transitions, 11515 flow [2024-06-04 15:50:31,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11165, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=675, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=579, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11515, PETRI_PLACES=514, PETRI_TRANSITIONS=681} [2024-06-04 15:50:31,446 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 472 predicate places. [2024-06-04 15:50:31,446 INFO L495 AbstractCegarLoop]: Abstraction has has 514 places, 681 transitions, 11515 flow [2024-06-04 15:50:31,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:50:31,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:50:31,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:50:31,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-04 15:50:31,447 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:50:31,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:50:31,447 INFO L85 PathProgramCache]: Analyzing trace with hash -996867189, now seen corresponding path program 11 times [2024-06-04 15:50:31,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:50:31,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011766979] [2024-06-04 15:50:31,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:50:31,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:50:31,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:50:32,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:50:32,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:50:32,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011766979] [2024-06-04 15:50:32,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011766979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:50:32,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:50:32,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:50:32,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049456105] [2024-06-04 15:50:32,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:50:32,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:50:32,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:50:32,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:50:32,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:50:32,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:50:32,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 681 transitions, 11515 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:50:32,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:50:32,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:50:32,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:50:34,630 INFO L124 PetriNetUnfolderBase]: 5019/7630 cut-off events. [2024-06-04 15:50:34,630 INFO L125 PetriNetUnfolderBase]: For 1652535/1652537 co-relation queries the response was YES. [2024-06-04 15:50:34,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78609 conditions, 7630 events. 5019/7630 cut-off events. For 1652535/1652537 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 44404 event pairs, 967 based on Foata normal form. 4/7631 useless extension candidates. Maximal degree in co-relation 78378. Up to 7347 conditions per place. [2024-06-04 15:50:34,773 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 613 selfloop transitions, 89 changer transitions 0/705 dead transitions. [2024-06-04 15:50:34,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 705 transitions, 13361 flow [2024-06-04 15:50:34,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:50:34,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:50:34,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2024-06-04 15:50:34,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38482384823848237 [2024-06-04 15:50:34,774 INFO L175 Difference]: Start difference. First operand has 514 places, 681 transitions, 11515 flow. Second operand 9 states and 142 transitions. [2024-06-04 15:50:34,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 705 transitions, 13361 flow [2024-06-04 15:50:42,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 705 transitions, 13159 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-06-04 15:50:42,034 INFO L231 Difference]: Finished difference. Result has 519 places, 682 transitions, 11541 flow [2024-06-04 15:50:42,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11313, PETRI_DIFFERENCE_MINUEND_PLACES=510, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=681, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=592, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11541, PETRI_PLACES=519, PETRI_TRANSITIONS=682} [2024-06-04 15:50:42,035 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 477 predicate places. [2024-06-04 15:50:42,035 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 682 transitions, 11541 flow [2024-06-04 15:50:42,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:50:42,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:50:42,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:50:42,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-04 15:50:42,035 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:50:42,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:50:42,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1983960685, now seen corresponding path program 4 times [2024-06-04 15:50:42,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:50:42,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361633440] [2024-06-04 15:50:42,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:50:42,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:50:42,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:50:42,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:50:42,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:50:42,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361633440] [2024-06-04 15:50:42,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361633440] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:50:42,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:50:42,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:50:42,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046982315] [2024-06-04 15:50:42,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:50:42,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:50:42,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:50:42,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:50:42,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:50:43,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:50:43,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 682 transitions, 11541 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:50:43,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:50:43,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:50:43,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:50:45,159 INFO L124 PetriNetUnfolderBase]: 5061/7686 cut-off events. [2024-06-04 15:50:45,159 INFO L125 PetriNetUnfolderBase]: For 1711361/1711365 co-relation queries the response was YES. [2024-06-04 15:50:45,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79940 conditions, 7686 events. 5061/7686 cut-off events. For 1711361/1711365 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 44719 event pairs, 974 based on Foata normal form. 6/7689 useless extension candidates. Maximal degree in co-relation 79708. Up to 7573 conditions per place. [2024-06-04 15:50:45,301 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 664 selfloop transitions, 48 changer transitions 0/715 dead transitions. [2024-06-04 15:50:45,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 715 transitions, 13829 flow [2024-06-04 15:50:45,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:50:45,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:50:45,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-06-04 15:50:45,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3794037940379404 [2024-06-04 15:50:45,302 INFO L175 Difference]: Start difference. First operand has 519 places, 682 transitions, 11541 flow. Second operand 9 states and 140 transitions. [2024-06-04 15:50:45,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 715 transitions, 13829 flow [2024-06-04 15:50:51,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 715 transitions, 13654 flow, removed 35 selfloop flow, removed 4 redundant places. [2024-06-04 15:50:51,779 INFO L231 Difference]: Finished difference. Result has 524 places, 691 transitions, 11750 flow [2024-06-04 15:50:51,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11366, PETRI_DIFFERENCE_MINUEND_PLACES=515, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=682, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=640, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11750, PETRI_PLACES=524, PETRI_TRANSITIONS=691} [2024-06-04 15:50:51,779 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 482 predicate places. [2024-06-04 15:50:51,779 INFO L495 AbstractCegarLoop]: Abstraction has has 524 places, 691 transitions, 11750 flow [2024-06-04 15:50:51,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:50:51,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:50:51,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:50:51,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-04 15:50:51,780 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:50:51,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:50:51,780 INFO L85 PathProgramCache]: Analyzing trace with hash 821661541, now seen corresponding path program 10 times [2024-06-04 15:50:51,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:50:51,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243668118] [2024-06-04 15:50:51,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:50:51,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:50:51,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:50:52,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:50:52,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:50:52,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243668118] [2024-06-04 15:50:52,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243668118] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:50:52,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:50:52,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:50:52,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506607279] [2024-06-04 15:50:52,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:50:52,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:50:52,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:50:52,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:50:52,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:50:52,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:50:52,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 691 transitions, 11750 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:50:52,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:50:52,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:50:52,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:50:54,806 INFO L124 PetriNetUnfolderBase]: 5097/7738 cut-off events. [2024-06-04 15:50:54,806 INFO L125 PetriNetUnfolderBase]: For 1772855/1772857 co-relation queries the response was YES. [2024-06-04 15:50:54,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80747 conditions, 7738 events. 5097/7738 cut-off events. For 1772855/1772857 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 45026 event pairs, 954 based on Foata normal form. 6/7741 useless extension candidates. Maximal degree in co-relation 80514. Up to 7192 conditions per place. [2024-06-04 15:50:54,948 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 592 selfloop transitions, 131 changer transitions 0/726 dead transitions. [2024-06-04 15:50:54,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 726 transitions, 13971 flow [2024-06-04 15:50:54,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:50:54,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:50:54,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-04 15:50:54,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4065040650406504 [2024-06-04 15:50:54,949 INFO L175 Difference]: Start difference. First operand has 524 places, 691 transitions, 11750 flow. Second operand 9 states and 150 transitions. [2024-06-04 15:50:54,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 726 transitions, 13971 flow [2024-06-04 15:51:02,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 726 transitions, 13825 flow, removed 56 selfloop flow, removed 4 redundant places. [2024-06-04 15:51:02,477 INFO L231 Difference]: Finished difference. Result has 529 places, 697 transitions, 12031 flow [2024-06-04 15:51:02,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11604, PETRI_DIFFERENCE_MINUEND_PLACES=520, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=691, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=566, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12031, PETRI_PLACES=529, PETRI_TRANSITIONS=697} [2024-06-04 15:51:02,478 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 487 predicate places. [2024-06-04 15:51:02,478 INFO L495 AbstractCegarLoop]: Abstraction has has 529 places, 697 transitions, 12031 flow [2024-06-04 15:51:02,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:51:02,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:51:02,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:51:02,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-04 15:51:02,478 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:51:02,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:51:02,479 INFO L85 PathProgramCache]: Analyzing trace with hash 185816031, now seen corresponding path program 12 times [2024-06-04 15:51:02,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:51:02,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462073513] [2024-06-04 15:51:02,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:51:02,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:51:02,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:51:03,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:51:03,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:51:03,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462073513] [2024-06-04 15:51:03,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462073513] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:51:03,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:51:03,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:51:03,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833794910] [2024-06-04 15:51:03,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:51:03,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:51:03,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:51:03,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:51:03,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:51:03,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:51:03,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 529 places, 697 transitions, 12031 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:51:03,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:51:03,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:51:03,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:51:05,543 INFO L124 PetriNetUnfolderBase]: 5091/7730 cut-off events. [2024-06-04 15:51:05,543 INFO L125 PetriNetUnfolderBase]: For 1765449/1765451 co-relation queries the response was YES. [2024-06-04 15:51:05,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80865 conditions, 7730 events. 5091/7730 cut-off events. For 1765449/1765451 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 45047 event pairs, 981 based on Foata normal form. 4/7731 useless extension candidates. Maximal degree in co-relation 80630. Up to 7551 conditions per place. [2024-06-04 15:51:05,683 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 648 selfloop transitions, 66 changer transitions 0/717 dead transitions. [2024-06-04 15:51:05,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 717 transitions, 13556 flow [2024-06-04 15:51:05,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:51:05,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:51:05,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 135 transitions. [2024-06-04 15:51:05,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36585365853658536 [2024-06-04 15:51:05,684 INFO L175 Difference]: Start difference. First operand has 529 places, 697 transitions, 12031 flow. Second operand 9 states and 135 transitions. [2024-06-04 15:51:05,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 717 transitions, 13556 flow [2024-06-04 15:51:11,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 532 places, 717 transitions, 13309 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-04 15:51:11,694 INFO L231 Difference]: Finished difference. Result has 533 places, 698 transitions, 11965 flow [2024-06-04 15:51:11,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11784, PETRI_DIFFERENCE_MINUEND_PLACES=524, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=697, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=631, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11965, PETRI_PLACES=533, PETRI_TRANSITIONS=698} [2024-06-04 15:51:11,694 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 491 predicate places. [2024-06-04 15:51:11,694 INFO L495 AbstractCegarLoop]: Abstraction has has 533 places, 698 transitions, 11965 flow [2024-06-04 15:51:11,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:51:11,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:51:11,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:51:11,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-04 15:51:11,695 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:51:11,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:51:11,695 INFO L85 PathProgramCache]: Analyzing trace with hash 189541053, now seen corresponding path program 5 times [2024-06-04 15:51:11,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:51:11,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758217313] [2024-06-04 15:51:11,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:51:11,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:51:11,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:51:12,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:51:12,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:51:12,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758217313] [2024-06-04 15:51:12,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758217313] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:51:12,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:51:12,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:51:12,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807789478] [2024-06-04 15:51:12,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:51:12,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:51:12,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:51:12,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:51:12,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:51:12,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:51:12,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 698 transitions, 11965 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:51:12,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:51:12,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:51:12,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:51:14,965 INFO L124 PetriNetUnfolderBase]: 5085/7720 cut-off events. [2024-06-04 15:51:14,965 INFO L125 PetriNetUnfolderBase]: For 1775653/1775657 co-relation queries the response was YES. [2024-06-04 15:51:15,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80312 conditions, 7720 events. 5085/7720 cut-off events. For 1775653/1775657 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 44931 event pairs, 977 based on Foata normal form. 6/7723 useless extension candidates. Maximal degree in co-relation 80076. Up to 7610 conditions per place. [2024-06-04 15:51:15,103 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 669 selfloop transitions, 49 changer transitions 0/721 dead transitions. [2024-06-04 15:51:15,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 721 transitions, 13743 flow [2024-06-04 15:51:15,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:51:15,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:51:15,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 138 transitions. [2024-06-04 15:51:15,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37398373983739835 [2024-06-04 15:51:15,104 INFO L175 Difference]: Start difference. First operand has 533 places, 698 transitions, 11965 flow. Second operand 9 states and 138 transitions. [2024-06-04 15:51:15,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 721 transitions, 13743 flow [2024-06-04 15:51:22,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 721 transitions, 13462 flow, removed 64 selfloop flow, removed 7 redundant places. [2024-06-04 15:51:22,135 INFO L231 Difference]: Finished difference. Result has 535 places, 698 transitions, 11788 flow [2024-06-04 15:51:22,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11684, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=698, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=649, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11788, PETRI_PLACES=535, PETRI_TRANSITIONS=698} [2024-06-04 15:51:22,135 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 493 predicate places. [2024-06-04 15:51:22,135 INFO L495 AbstractCegarLoop]: Abstraction has has 535 places, 698 transitions, 11788 flow [2024-06-04 15:51:22,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:51:22,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:51:22,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:51:22,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-04 15:51:22,135 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:51:22,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:51:22,136 INFO L85 PathProgramCache]: Analyzing trace with hash 821655992, now seen corresponding path program 4 times [2024-06-04 15:51:22,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:51:22,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202883051] [2024-06-04 15:51:22,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:51:22,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:51:22,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:51:23,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:51:23,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:51:23,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202883051] [2024-06-04 15:51:23,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202883051] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:51:23,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:51:23,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:51:23,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822905891] [2024-06-04 15:51:23,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:51:23,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:51:23,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:51:23,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:51:23,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:51:23,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:51:23,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 698 transitions, 11788 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:51:23,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:51:23,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:51:23,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:51:26,197 INFO L124 PetriNetUnfolderBase]: 5074/7707 cut-off events. [2024-06-04 15:51:26,197 INFO L125 PetriNetUnfolderBase]: For 1778015/1778017 co-relation queries the response was YES. [2024-06-04 15:51:26,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79752 conditions, 7707 events. 5074/7707 cut-off events. For 1778015/1778017 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 44882 event pairs, 962 based on Foata normal form. 5/7709 useless extension candidates. Maximal degree in co-relation 79515. Up to 7441 conditions per place. [2024-06-04 15:51:26,444 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 625 selfloop transitions, 92 changer transitions 0/720 dead transitions. [2024-06-04 15:51:26,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 543 places, 720 transitions, 13591 flow [2024-06-04 15:51:26,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:51:26,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:51:26,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-06-04 15:51:26,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3794037940379404 [2024-06-04 15:51:26,445 INFO L175 Difference]: Start difference. First operand has 535 places, 698 transitions, 11788 flow. Second operand 9 states and 140 transitions. [2024-06-04 15:51:26,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 543 places, 720 transitions, 13591 flow [2024-06-04 15:51:34,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 536 places, 720 transitions, 13489 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-04 15:51:34,023 INFO L231 Difference]: Finished difference. Result has 538 places, 699 transitions, 11955 flow [2024-06-04 15:51:34,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11686, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=698, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=606, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11955, PETRI_PLACES=538, PETRI_TRANSITIONS=699} [2024-06-04 15:51:34,023 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 496 predicate places. [2024-06-04 15:51:34,023 INFO L495 AbstractCegarLoop]: Abstraction has has 538 places, 699 transitions, 11955 flow [2024-06-04 15:51:34,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:51:34,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:51:34,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:51:34,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-04 15:51:34,024 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:51:34,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:51:34,024 INFO L85 PathProgramCache]: Analyzing trace with hash 197165410, now seen corresponding path program 1 times [2024-06-04 15:51:34,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:51:34,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910944250] [2024-06-04 15:51:34,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:51:34,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:51:34,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:51:34,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:51:34,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:51:34,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910944250] [2024-06-04 15:51:34,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910944250] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:51:34,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:51:34,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:51:34,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197982291] [2024-06-04 15:51:34,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:51:34,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:51:34,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:51:34,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:51:34,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:51:34,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:51:34,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 699 transitions, 11955 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:51:34,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:51:34,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:51:34,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:51:37,853 INFO L124 PetriNetUnfolderBase]: 5071/7701 cut-off events. [2024-06-04 15:51:37,853 INFO L125 PetriNetUnfolderBase]: For 1783758/1783762 co-relation queries the response was YES. [2024-06-04 15:51:37,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79960 conditions, 7701 events. 5071/7701 cut-off events. For 1783758/1783762 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 44817 event pairs, 983 based on Foata normal form. 5/7703 useless extension candidates. Maximal degree in co-relation 79721. Up to 7613 conditions per place. [2024-06-04 15:51:37,997 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 672 selfloop transitions, 45 changer transitions 0/720 dead transitions. [2024-06-04 15:51:37,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 545 places, 720 transitions, 13515 flow [2024-06-04 15:51:37,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:51:37,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:51:37,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 124 transitions. [2024-06-04 15:51:37,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3780487804878049 [2024-06-04 15:51:37,998 INFO L175 Difference]: Start difference. First operand has 538 places, 699 transitions, 11955 flow. Second operand 8 states and 124 transitions. [2024-06-04 15:51:37,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 545 places, 720 transitions, 13515 flow [2024-06-04 15:51:46,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 539 places, 720 transitions, 13291 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-04 15:51:46,455 INFO L231 Difference]: Finished difference. Result has 540 places, 701 transitions, 11895 flow [2024-06-04 15:51:46,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11731, PETRI_DIFFERENCE_MINUEND_PLACES=532, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=699, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=654, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11895, PETRI_PLACES=540, PETRI_TRANSITIONS=701} [2024-06-04 15:51:46,456 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 498 predicate places. [2024-06-04 15:51:46,456 INFO L495 AbstractCegarLoop]: Abstraction has has 540 places, 701 transitions, 11895 flow [2024-06-04 15:51:46,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:51:46,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:51:46,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:51:46,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-04 15:51:46,456 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:51:46,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:51:46,456 INFO L85 PathProgramCache]: Analyzing trace with hash 196898097, now seen corresponding path program 11 times [2024-06-04 15:51:46,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:51:46,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563056436] [2024-06-04 15:51:46,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:51:46,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:51:46,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:51:47,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:51:47,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:51:47,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563056436] [2024-06-04 15:51:47,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563056436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:51:47,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:51:47,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:51:47,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439963215] [2024-06-04 15:51:47,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:51:47,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:51:47,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:51:47,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:51:47,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:51:47,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:51:47,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 540 places, 701 transitions, 11895 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:51:47,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:51:47,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:51:47,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:51:50,188 INFO L124 PetriNetUnfolderBase]: 5059/7687 cut-off events. [2024-06-04 15:51:50,189 INFO L125 PetriNetUnfolderBase]: For 1801134/1801136 co-relation queries the response was YES. [2024-06-04 15:51:50,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79260 conditions, 7687 events. 5059/7687 cut-off events. For 1801134/1801136 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 44754 event pairs, 976 based on Foata normal form. 6/7690 useless extension candidates. Maximal degree in co-relation 79020. Up to 7278 conditions per place. [2024-06-04 15:51:50,311 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 609 selfloop transitions, 115 changer transitions 0/727 dead transitions. [2024-06-04 15:51:50,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 548 places, 727 transitions, 13703 flow [2024-06-04 15:51:50,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:51:50,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:51:50,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-04 15:51:50,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3956639566395664 [2024-06-04 15:51:50,312 INFO L175 Difference]: Start difference. First operand has 540 places, 701 transitions, 11895 flow. Second operand 9 states and 146 transitions. [2024-06-04 15:51:50,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 548 places, 727 transitions, 13703 flow [2024-06-04 15:51:57,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 543 places, 727 transitions, 13534 flow, removed 47 selfloop flow, removed 5 redundant places. [2024-06-04 15:51:57,624 INFO L231 Difference]: Finished difference. Result has 544 places, 701 transitions, 11963 flow [2024-06-04 15:51:57,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11726, PETRI_DIFFERENCE_MINUEND_PLACES=535, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=701, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=586, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11963, PETRI_PLACES=544, PETRI_TRANSITIONS=701} [2024-06-04 15:51:57,624 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 502 predicate places. [2024-06-04 15:51:57,624 INFO L495 AbstractCegarLoop]: Abstraction has has 544 places, 701 transitions, 11963 flow [2024-06-04 15:51:57,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:51:57,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:51:57,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:51:57,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-04 15:51:57,624 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:51:57,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:51:57,625 INFO L85 PathProgramCache]: Analyzing trace with hash 185816217, now seen corresponding path program 12 times [2024-06-04 15:51:57,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:51:57,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295025434] [2024-06-04 15:51:57,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:51:57,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:51:57,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:51:58,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:51:58,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:51:58,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295025434] [2024-06-04 15:51:58,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295025434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:51:58,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:51:58,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:51:58,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585294014] [2024-06-04 15:51:58,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:51:58,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:51:58,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:51:58,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:51:58,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:51:58,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:51:58,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 544 places, 701 transitions, 11963 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:51:58,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:51:58,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:51:58,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:52:01,315 INFO L124 PetriNetUnfolderBase]: 5047/7671 cut-off events. [2024-06-04 15:52:01,315 INFO L125 PetriNetUnfolderBase]: For 1794018/1794020 co-relation queries the response was YES. [2024-06-04 15:52:01,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78888 conditions, 7671 events. 5047/7671 cut-off events. For 1794018/1794020 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 44707 event pairs, 975 based on Foata normal form. 6/7674 useless extension candidates. Maximal degree in co-relation 78647. Up to 7309 conditions per place. [2024-06-04 15:52:01,455 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 620 selfloop transitions, 103 changer transitions 0/726 dead transitions. [2024-06-04 15:52:01,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 726 transitions, 13505 flow [2024-06-04 15:52:01,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:52:01,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:52:01,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-04 15:52:01,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3956639566395664 [2024-06-04 15:52:01,456 INFO L175 Difference]: Start difference. First operand has 544 places, 701 transitions, 11963 flow. Second operand 9 states and 146 transitions. [2024-06-04 15:52:01,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 726 transitions, 13505 flow [2024-06-04 15:52:10,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 726 transitions, 13235 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-04 15:52:10,871 INFO L231 Difference]: Finished difference. Result has 546 places, 701 transitions, 11905 flow [2024-06-04 15:52:10,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11693, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=701, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=598, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11905, PETRI_PLACES=546, PETRI_TRANSITIONS=701} [2024-06-04 15:52:10,871 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 504 predicate places. [2024-06-04 15:52:10,871 INFO L495 AbstractCegarLoop]: Abstraction has has 546 places, 701 transitions, 11905 flow [2024-06-04 15:52:10,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:52:10,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:52:10,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:52:10,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-04 15:52:10,871 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:52:10,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:52:10,872 INFO L85 PathProgramCache]: Analyzing trace with hash 196898283, now seen corresponding path program 6 times [2024-06-04 15:52:10,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:52:10,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818851335] [2024-06-04 15:52:10,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:52:10,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:52:10,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:52:11,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:52:11,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:52:11,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818851335] [2024-06-04 15:52:11,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818851335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:52:11,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:52:11,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:52:11,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764080959] [2024-06-04 15:52:11,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:52:11,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:52:11,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:52:11,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:52:11,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:52:11,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:52:11,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 546 places, 701 transitions, 11905 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:52:11,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:52:11,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:52:11,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:52:14,441 INFO L124 PetriNetUnfolderBase]: 5041/7661 cut-off events. [2024-06-04 15:52:14,441 INFO L125 PetriNetUnfolderBase]: For 1781990/1781994 co-relation queries the response was YES. [2024-06-04 15:52:14,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78622 conditions, 7661 events. 5041/7661 cut-off events. For 1781990/1781994 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 44628 event pairs, 965 based on Foata normal form. 6/7664 useless extension candidates. Maximal degree in co-relation 78380. Up to 7582 conditions per place. [2024-06-04 15:52:14,569 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 682 selfloop transitions, 37 changer transitions 0/722 dead transitions. [2024-06-04 15:52:14,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 554 places, 722 transitions, 13419 flow [2024-06-04 15:52:14,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:52:14,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:52:14,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 133 transitions. [2024-06-04 15:52:14,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3604336043360434 [2024-06-04 15:52:14,570 INFO L175 Difference]: Start difference. First operand has 546 places, 701 transitions, 11905 flow. Second operand 9 states and 133 transitions. [2024-06-04 15:52:14,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 554 places, 722 transitions, 13419 flow [2024-06-04 15:52:22,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 547 places, 722 transitions, 13105 flow, removed 56 selfloop flow, removed 7 redundant places. [2024-06-04 15:52:22,793 INFO L231 Difference]: Finished difference. Result has 548 places, 701 transitions, 11671 flow [2024-06-04 15:52:22,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11591, PETRI_DIFFERENCE_MINUEND_PLACES=539, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=701, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=664, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11671, PETRI_PLACES=548, PETRI_TRANSITIONS=701} [2024-06-04 15:52:22,794 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 506 predicate places. [2024-06-04 15:52:22,794 INFO L495 AbstractCegarLoop]: Abstraction has has 548 places, 701 transitions, 11671 flow [2024-06-04 15:52:22,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:52:22,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:52:22,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:52:22,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-04 15:52:22,795 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:52:22,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:52:22,795 INFO L85 PathProgramCache]: Analyzing trace with hash 197161845, now seen corresponding path program 1 times [2024-06-04 15:52:22,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:52:22,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771432025] [2024-06-04 15:52:22,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:52:22,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:52:22,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:52:23,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:52:23,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:52:23,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771432025] [2024-06-04 15:52:23,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771432025] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:52:23,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:52:23,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:52:23,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278642644] [2024-06-04 15:52:23,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:52:23,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:52:23,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:52:23,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:52:23,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:52:24,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:52:24,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 548 places, 701 transitions, 11671 flow. Second operand has 12 states, 12 states have (on average 8.5) internal successors, (102), 12 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:52:24,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:52:24,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:52:24,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:52:27,025 INFO L124 PetriNetUnfolderBase]: 5085/7731 cut-off events. [2024-06-04 15:52:27,025 INFO L125 PetriNetUnfolderBase]: For 1896390/1896392 co-relation queries the response was YES. [2024-06-04 15:52:27,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78851 conditions, 7731 events. 5085/7731 cut-off events. For 1896390/1896392 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 45124 event pairs, 980 based on Foata normal form. 14/7742 useless extension candidates. Maximal degree in co-relation 78608. Up to 7369 conditions per place. [2024-06-04 15:52:27,154 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 631 selfloop transitions, 97 changer transitions 0/731 dead transitions. [2024-06-04 15:52:27,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 556 places, 731 transitions, 13301 flow [2024-06-04 15:52:27,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:52:27,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:52:27,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-04 15:52:27,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3956639566395664 [2024-06-04 15:52:27,156 INFO L175 Difference]: Start difference. First operand has 548 places, 701 transitions, 11671 flow. Second operand 9 states and 146 transitions. [2024-06-04 15:52:27,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 556 places, 731 transitions, 13301 flow [2024-06-04 15:52:34,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 547 places, 731 transitions, 13203 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-04 15:52:34,892 INFO L231 Difference]: Finished difference. Result has 548 places, 702 transitions, 11803 flow [2024-06-04 15:52:34,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11573, PETRI_DIFFERENCE_MINUEND_PLACES=539, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=701, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=604, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11803, PETRI_PLACES=548, PETRI_TRANSITIONS=702} [2024-06-04 15:52:34,892 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 506 predicate places. [2024-06-04 15:52:34,892 INFO L495 AbstractCegarLoop]: Abstraction has has 548 places, 702 transitions, 11803 flow [2024-06-04 15:52:34,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.5) internal successors, (102), 12 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:52:34,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:52:34,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:52:34,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-04 15:52:34,893 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:52:34,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:52:34,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1541163593, now seen corresponding path program 2 times [2024-06-04 15:52:34,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:52:34,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913196583] [2024-06-04 15:52:34,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:52:34,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:52:34,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:52:36,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:52:36,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:52:36,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913196583] [2024-06-04 15:52:36,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913196583] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:52:36,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:52:36,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:52:36,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272645213] [2024-06-04 15:52:36,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:52:36,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:52:36,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:52:36,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:52:36,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:52:36,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:52:36,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 548 places, 702 transitions, 11803 flow. Second operand has 12 states, 12 states have (on average 8.5) internal successors, (102), 12 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:52:36,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:52:36,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:52:36,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:52:39,061 INFO L124 PetriNetUnfolderBase]: 5129/7799 cut-off events. [2024-06-04 15:52:39,062 INFO L125 PetriNetUnfolderBase]: For 1928116/1928118 co-relation queries the response was YES. [2024-06-04 15:52:39,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79864 conditions, 7799 events. 5129/7799 cut-off events. For 1928116/1928118 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 45563 event pairs, 992 based on Foata normal form. 14/7810 useless extension candidates. Maximal degree in co-relation 79620. Up to 7439 conditions per place. [2024-06-04 15:52:39,191 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 640 selfloop transitions, 91 changer transitions 0/734 dead transitions. [2024-06-04 15:52:39,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 556 places, 734 transitions, 13453 flow [2024-06-04 15:52:39,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:52:39,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:52:39,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-04 15:52:39,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010840108401084 [2024-06-04 15:52:39,192 INFO L175 Difference]: Start difference. First operand has 548 places, 702 transitions, 11803 flow. Second operand 9 states and 148 transitions. [2024-06-04 15:52:39,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 556 places, 734 transitions, 13453 flow [2024-06-04 15:52:47,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 549 places, 734 transitions, 13247 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-04 15:52:47,767 INFO L231 Difference]: Finished difference. Result has 550 places, 703 transitions, 11816 flow [2024-06-04 15:52:47,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11597, PETRI_DIFFERENCE_MINUEND_PLACES=541, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=702, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=611, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11816, PETRI_PLACES=550, PETRI_TRANSITIONS=703} [2024-06-04 15:52:47,767 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 508 predicate places. [2024-06-04 15:52:47,768 INFO L495 AbstractCegarLoop]: Abstraction has has 550 places, 703 transitions, 11816 flow [2024-06-04 15:52:47,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.5) internal successors, (102), 12 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:52:47,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:52:47,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:52:47,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-04 15:52:47,768 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:52:47,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:52:47,769 INFO L85 PathProgramCache]: Analyzing trace with hash 817839055, now seen corresponding path program 4 times [2024-06-04 15:52:47,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:52:47,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34766639] [2024-06-04 15:52:47,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:52:47,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:52:47,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:52:48,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:52:48,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:52:48,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34766639] [2024-06-04 15:52:48,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34766639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:52:48,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:52:48,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:52:48,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96364259] [2024-06-04 15:52:48,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:52:48,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:52:48,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:52:48,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:52:48,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:52:48,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:52:48,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 550 places, 703 transitions, 11816 flow. Second operand has 12 states, 12 states have (on average 8.5) internal successors, (102), 12 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:52:48,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:52:48,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:52:48,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:52:51,895 INFO L124 PetriNetUnfolderBase]: 5165/7855 cut-off events. [2024-06-04 15:52:51,895 INFO L125 PetriNetUnfolderBase]: For 1918584/1918586 co-relation queries the response was YES. [2024-06-04 15:52:51,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80361 conditions, 7855 events. 5165/7855 cut-off events. For 1918584/1918586 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 45939 event pairs, 984 based on Foata normal form. 10/7862 useless extension candidates. Maximal degree in co-relation 80116. Up to 7393 conditions per place. [2024-06-04 15:52:52,026 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 643 selfloop transitions, 93 changer transitions 0/739 dead transitions. [2024-06-04 15:52:52,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 558 places, 739 transitions, 13522 flow [2024-06-04 15:52:52,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:52:52,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:52:52,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-04 15:52:52,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4037940379403794 [2024-06-04 15:52:52,027 INFO L175 Difference]: Start difference. First operand has 550 places, 703 transitions, 11816 flow. Second operand 9 states and 149 transitions. [2024-06-04 15:52:52,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 558 places, 739 transitions, 13522 flow [2024-06-04 15:53:00,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 551 places, 739 transitions, 13325 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-04 15:53:00,565 INFO L231 Difference]: Finished difference. Result has 553 places, 706 transitions, 11885 flow [2024-06-04 15:53:00,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11619, PETRI_DIFFERENCE_MINUEND_PLACES=543, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=703, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=610, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11885, PETRI_PLACES=553, PETRI_TRANSITIONS=706} [2024-06-04 15:53:00,565 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 511 predicate places. [2024-06-04 15:53:00,566 INFO L495 AbstractCegarLoop]: Abstraction has has 553 places, 706 transitions, 11885 flow [2024-06-04 15:53:00,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.5) internal successors, (102), 12 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:53:00,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:53:00,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:53:00,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-04 15:53:00,566 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:53:00,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:53:00,566 INFO L85 PathProgramCache]: Analyzing trace with hash 829289959, now seen corresponding path program 3 times [2024-06-04 15:53:00,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:53:00,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019972088] [2024-06-04 15:53:00,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:53:00,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:53:00,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:53:01,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:53:01,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:53:01,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019972088] [2024-06-04 15:53:01,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019972088] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:53:01,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:53:01,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:53:01,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504275509] [2024-06-04 15:53:01,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:53:01,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:53:01,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:53:01,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:53:01,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:53:01,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-04 15:53:01,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 553 places, 706 transitions, 11885 flow. Second operand has 12 states, 12 states have (on average 8.5) internal successors, (102), 12 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:53:01,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:53:01,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-04 15:53:01,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:53:04,910 INFO L124 PetriNetUnfolderBase]: 5193/7899 cut-off events. [2024-06-04 15:53:04,910 INFO L125 PetriNetUnfolderBase]: For 1944857/1944859 co-relation queries the response was YES. [2024-06-04 15:53:05,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80833 conditions, 7899 events. 5193/7899 cut-off events. For 1944857/1944859 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 46298 event pairs, 992 based on Foata normal form. 10/7906 useless extension candidates. Maximal degree in co-relation 80586. Up to 7395 conditions per place. [2024-06-04 15:53:05,043 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 635 selfloop transitions, 100 changer transitions 0/738 dead transitions. [2024-06-04 15:53:05,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 561 places, 738 transitions, 13547 flow [2024-06-04 15:53:05,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:53:05,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:53:05,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-04 15:53:05,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3983739837398374 [2024-06-04 15:53:05,045 INFO L175 Difference]: Start difference. First operand has 553 places, 706 transitions, 11885 flow. Second operand 9 states and 147 transitions. [2024-06-04 15:53:05,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 561 places, 738 transitions, 13547 flow [2024-06-04 15:53:14,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 555 places, 738 transitions, 13339 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-04 15:53:14,611 INFO L231 Difference]: Finished difference. Result has 556 places, 707 transitions, 11907 flow [2024-06-04 15:53:14,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11677, PETRI_DIFFERENCE_MINUEND_PLACES=547, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=706, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=606, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11907, PETRI_PLACES=556, PETRI_TRANSITIONS=707} [2024-06-04 15:53:14,612 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 514 predicate places. [2024-06-04 15:53:14,612 INFO L495 AbstractCegarLoop]: Abstraction has has 556 places, 707 transitions, 11907 flow [2024-06-04 15:53:14,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.5) internal successors, (102), 12 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:53:14,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:53:14,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:53:14,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-04 15:53:14,612 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:53:14,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:53:14,613 INFO L85 PathProgramCache]: Analyzing trace with hash 802010778, now seen corresponding path program 5 times [2024-06-04 15:53:14,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:53:14,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032156237] [2024-06-04 15:53:14,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:53:14,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:53:14,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat