./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix052_pso.opt_rmo.opt_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix052_pso.opt_rmo.opt_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix052_pso.opt_rmo.opt_tso.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix052_pso.opt_rmo.opt_tso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 03:35:03,017 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 03:35:03,074 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 03:35:03,079 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 03:35:03,079 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 03:35:03,102 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 03:35:03,104 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 03:35:03,104 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 03:35:03,105 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 03:35:03,108 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 03:35:03,108 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 03:35:03,108 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 03:35:03,110 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 03:35:03,111 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 03:35:03,111 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 03:35:03,111 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 03:35:03,112 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 03:35:03,112 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 03:35:03,112 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 03:35:03,112 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 03:35:03,113 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 03:35:03,114 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 03:35:03,114 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 03:35:03,114 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 03:35:03,114 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 03:35:03,114 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 03:35:03,115 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 03:35:03,115 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 03:35:03,115 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 03:35:03,115 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 03:35:03,116 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 03:35:03,116 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 03:35:03,117 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:35:03,117 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 03:35:03,117 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 03:35:03,117 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 03:35:03,117 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 03:35:03,117 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 03:35:03,118 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 03:35:03,118 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 03:35:03,119 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 03:35:03,119 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 03:35:03,119 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 03:35:03,119 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 03:35:03,344 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 03:35:03,368 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 03:35:03,374 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 03:35:03,374 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 03:35:03,375 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 03:35:03,376 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix052_pso.opt_rmo.opt_tso.opt.i [2024-06-28 03:35:04,457 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 03:35:04,709 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 03:35:04,710 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix052_pso.opt_rmo.opt_tso.opt.i [2024-06-28 03:35:04,727 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bd98893f/a985be12fbc04e67bfe7783e4a2f2fbd/FLAGbf5a47ba9 [2024-06-28 03:35:05,037 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bd98893f/a985be12fbc04e67bfe7783e4a2f2fbd [2024-06-28 03:35:05,039 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 03:35:05,039 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 03:35:05,040 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix052_pso.opt_rmo.opt_tso.opt.yml/witness.yml [2024-06-28 03:35:05,206 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 03:35:05,208 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 03:35:05,210 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 03:35:05,210 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 03:35:05,214 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 03:35:05,215 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:35:05" (1/2) ... [2024-06-28 03:35:05,216 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ebc3e2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:35:05, skipping insertion in model container [2024-06-28 03:35:05,216 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:35:05" (1/2) ... [2024-06-28 03:35:05,218 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@62161086 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:35:05, skipping insertion in model container [2024-06-28 03:35:05,218 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:35:05" (2/2) ... [2024-06-28 03:35:05,218 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ebc3e2c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:35:05, skipping insertion in model container [2024-06-28 03:35:05,218 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:35:05" (2/2) ... [2024-06-28 03:35:05,218 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 03:35:05,284 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 03:35:05,285 INFO L97 edCorrectnessWitness]: Location invariant before [L829-L829] (((((((((((((((((! multithreaded || y$r_buff1_thd1 == (_Bool)0) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || (((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (z == 0 || z == 1)) [2024-06-28 03:35:05,286 INFO L97 edCorrectnessWitness]: Location invariant before [L826-L826] (((((((((((((((((! multithreaded || y$r_buff1_thd1 == (_Bool)0) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || (((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (z == 0 || z == 1)) [2024-06-28 03:35:05,286 INFO L97 edCorrectnessWitness]: Location invariant before [L828-L828] (((((((((((((((((! multithreaded || y$r_buff1_thd1 == (_Bool)0) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || (((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (z == 0 || z == 1)) [2024-06-28 03:35:05,286 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 03:35:05,286 INFO L106 edCorrectnessWitness]: ghost_update [L824-L824] multithreaded = 1; [2024-06-28 03:35:05,324 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 03:35:05,635 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:35:05,651 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 03:35:05,791 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:35:05,838 INFO L206 MainTranslator]: Completed translation [2024-06-28 03:35:05,838 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:35:05 WrapperNode [2024-06-28 03:35:05,838 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 03:35:05,839 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 03:35:05,839 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 03:35:05,839 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 03:35:05,844 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:35:05" (1/1) ... [2024-06-28 03:35:05,856 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:35:05" (1/1) ... [2024-06-28 03:35:05,878 INFO L138 Inliner]: procedures = 175, calls = 43, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 125 [2024-06-28 03:35:05,879 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 03:35:05,879 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 03:35:05,879 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 03:35:05,880 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 03:35:05,893 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:35:05" (1/1) ... [2024-06-28 03:35:05,893 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:35:05" (1/1) ... [2024-06-28 03:35:05,896 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:35:05" (1/1) ... [2024-06-28 03:35:05,909 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 03:35:05,910 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:35:05" (1/1) ... [2024-06-28 03:35:05,910 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:35:05" (1/1) ... [2024-06-28 03:35:05,916 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:35:05" (1/1) ... [2024-06-28 03:35:05,918 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:35:05" (1/1) ... [2024-06-28 03:35:05,919 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:35:05" (1/1) ... [2024-06-28 03:35:05,921 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:35:05" (1/1) ... [2024-06-28 03:35:05,923 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 03:35:05,924 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 03:35:05,924 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 03:35:05,924 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 03:35:05,925 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:35:05" (1/1) ... [2024-06-28 03:35:05,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:35:05,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 03:35:05,949 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 03:35:05,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 03:35:05,995 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 03:35:05,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 03:35:05,996 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 03:35:05,996 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 03:35:05,996 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 03:35:05,996 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 03:35:05,996 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 03:35:05,997 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 03:35:05,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 03:35:05,997 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 03:35:05,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 03:35:05,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 03:35:05,998 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 03:35:06,110 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 03:35:06,112 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 03:35:06,418 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 03:35:06,420 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 03:35:06,585 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 03:35:06,585 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 03:35:06,586 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:35:06 BoogieIcfgContainer [2024-06-28 03:35:06,586 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 03:35:06,588 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 03:35:06,588 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 03:35:06,590 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 03:35:06,591 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 03:35:05" (1/4) ... [2024-06-28 03:35:06,591 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@282b67c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:35:06, skipping insertion in model container [2024-06-28 03:35:06,591 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:35:05" (2/4) ... [2024-06-28 03:35:06,592 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@282b67c6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:35:06, skipping insertion in model container [2024-06-28 03:35:06,592 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:35:05" (3/4) ... [2024-06-28 03:35:06,592 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@282b67c6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:35:06, skipping insertion in model container [2024-06-28 03:35:06,593 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:35:06" (4/4) ... [2024-06-28 03:35:06,593 INFO L112 eAbstractionObserver]: Analyzing ICFG mix052_pso.opt_rmo.opt_tso.opt.i [2024-06-28 03:35:06,606 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 03:35:06,607 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-28 03:35:06,607 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 03:35:06,643 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 03:35:06,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 40 transitions, 92 flow [2024-06-28 03:35:06,694 INFO L124 PetriNetUnfolderBase]: 0/37 cut-off events. [2024-06-28 03:35:06,694 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:35:06,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 37 events. 0/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 62 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 03:35:06,696 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 40 transitions, 92 flow [2024-06-28 03:35:06,698 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 31 transitions, 71 flow [2024-06-28 03:35:06,710 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 03:35:06,715 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;@4f923242, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 03:35:06,715 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-28 03:35:06,720 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 03:35:06,720 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-28 03:35:06,720 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:35:06,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:06,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 03:35:06,721 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)] === [2024-06-28 03:35:06,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:06,725 INFO L85 PathProgramCache]: Analyzing trace with hash 355559444, now seen corresponding path program 1 times [2024-06-28 03:35:06,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:06,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458587126] [2024-06-28 03:35:06,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:06,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:06,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:07,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:07,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:07,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458587126] [2024-06-28 03:35:07,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458587126] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:07,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:07,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 03:35:07,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578099839] [2024-06-28 03:35:07,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:07,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 03:35:07,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:07,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 03:35:07,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 03:35:07,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2024-06-28 03:35:07,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 71 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:07,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:07,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2024-06-28 03:35:07,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:07,942 INFO L124 PetriNetUnfolderBase]: 946/1511 cut-off events. [2024-06-28 03:35:07,942 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-06-28 03:35:07,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3017 conditions, 1511 events. 946/1511 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7369 event pairs, 638 based on Foata normal form. 1/1463 useless extension candidates. Maximal degree in co-relation 3005. Up to 1431 conditions per place. [2024-06-28 03:35:07,952 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 30 selfloop transitions, 4 changer transitions 0/41 dead transitions. [2024-06-28 03:35:07,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 41 transitions, 165 flow [2024-06-28 03:35:07,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 03:35:07,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 03:35:07,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2024-06-28 03:35:07,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2024-06-28 03:35:07,963 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 71 flow. Second operand 3 states and 76 transitions. [2024-06-28 03:35:07,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 41 transitions, 165 flow [2024-06-28 03:35:07,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 41 transitions, 160 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 03:35:07,967 INFO L231 Difference]: Finished difference. Result has 41 places, 34 transitions, 98 flow [2024-06-28 03:35:07,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=41, PETRI_TRANSITIONS=34} [2024-06-28 03:35:07,970 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 0 predicate places. [2024-06-28 03:35:07,970 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 34 transitions, 98 flow [2024-06-28 03:35:07,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:07,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:07,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:07,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 03:35:07,971 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)] === [2024-06-28 03:35:07,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:07,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1904726733, now seen corresponding path program 1 times [2024-06-28 03:35:07,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:07,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112991183] [2024-06-28 03:35:07,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:07,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:07,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:08,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:08,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:08,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112991183] [2024-06-28 03:35:08,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112991183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:08,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:08,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 03:35:08,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661202011] [2024-06-28 03:35:08,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:08,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 03:35:08,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:08,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 03:35:08,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 03:35:08,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 40 [2024-06-28 03:35:08,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 34 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 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) [2024-06-28 03:35:08,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:08,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 40 [2024-06-28 03:35:08,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:08,680 INFO L124 PetriNetUnfolderBase]: 1110/1712 cut-off events. [2024-06-28 03:35:08,681 INFO L125 PetriNetUnfolderBase]: For 338/338 co-relation queries the response was YES. [2024-06-28 03:35:08,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3933 conditions, 1712 events. 1110/1712 cut-off events. For 338/338 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 8133 event pairs, 641 based on Foata normal form. 3/1709 useless extension candidates. Maximal degree in co-relation 3921. Up to 1652 conditions per place. [2024-06-28 03:35:08,688 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 38 selfloop transitions, 7 changer transitions 0/51 dead transitions. [2024-06-28 03:35:08,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 51 transitions, 234 flow [2024-06-28 03:35:08,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 03:35:08,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 03:35:08,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2024-06-28 03:35:08,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-06-28 03:35:08,690 INFO L175 Difference]: Start difference. First operand has 41 places, 34 transitions, 98 flow. Second operand 4 states and 96 transitions. [2024-06-28 03:35:08,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 51 transitions, 234 flow [2024-06-28 03:35:08,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 51 transitions, 230 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 03:35:08,691 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 134 flow [2024-06-28 03:35:08,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2024-06-28 03:35:08,692 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 3 predicate places. [2024-06-28 03:35:08,692 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 134 flow [2024-06-28 03:35:08,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 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) [2024-06-28 03:35:08,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:08,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:08,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 03:35:08,693 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)] === [2024-06-28 03:35:08,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:08,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1083014459, now seen corresponding path program 1 times [2024-06-28 03:35:08,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:08,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356183951] [2024-06-28 03:35:08,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:08,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:08,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:09,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:09,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:09,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356183951] [2024-06-28 03:35:09,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356183951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:09,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:09,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 03:35:09,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523194861] [2024-06-28 03:35:09,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:09,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 03:35:09,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:09,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 03:35:09,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 03:35:09,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 40 [2024-06-28 03:35:09,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:09,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:09,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 40 [2024-06-28 03:35:09,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:09,493 INFO L124 PetriNetUnfolderBase]: 1132/1763 cut-off events. [2024-06-28 03:35:09,493 INFO L125 PetriNetUnfolderBase]: For 989/989 co-relation queries the response was YES. [2024-06-28 03:35:09,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4495 conditions, 1763 events. 1132/1763 cut-off events. For 989/989 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 8483 event pairs, 401 based on Foata normal form. 7/1767 useless extension candidates. Maximal degree in co-relation 4481. Up to 1555 conditions per place. [2024-06-28 03:35:09,501 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 54 selfloop transitions, 16 changer transitions 0/76 dead transitions. [2024-06-28 03:35:09,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 76 transitions, 400 flow [2024-06-28 03:35:09,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:35:09,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:35:09,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-06-28 03:35:09,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.645 [2024-06-28 03:35:09,503 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 134 flow. Second operand 5 states and 129 transitions. [2024-06-28 03:35:09,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 76 transitions, 400 flow [2024-06-28 03:35:09,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 76 transitions, 386 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-28 03:35:09,506 INFO L231 Difference]: Finished difference. Result has 49 places, 48 transitions, 233 flow [2024-06-28 03:35:09,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=233, PETRI_PLACES=49, PETRI_TRANSITIONS=48} [2024-06-28 03:35:09,507 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 8 predicate places. [2024-06-28 03:35:09,507 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 48 transitions, 233 flow [2024-06-28 03:35:09,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:09,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:09,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:09,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 03:35:09,507 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)] === [2024-06-28 03:35:09,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:09,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1393059768, now seen corresponding path program 1 times [2024-06-28 03:35:09,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:09,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400170862] [2024-06-28 03:35:09,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:09,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:09,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:10,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:10,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:10,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400170862] [2024-06-28 03:35:10,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400170862] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:10,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:10,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:35:10,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421228731] [2024-06-28 03:35:10,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:10,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:35:10,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:10,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:35:10,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:35:10,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 40 [2024-06-28 03:35:10,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 48 transitions, 233 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 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) [2024-06-28 03:35:10,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:10,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 40 [2024-06-28 03:35:10,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:10,406 INFO L124 PetriNetUnfolderBase]: 1214/1909 cut-off events. [2024-06-28 03:35:10,406 INFO L125 PetriNetUnfolderBase]: For 2570/2570 co-relation queries the response was YES. [2024-06-28 03:35:10,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5813 conditions, 1909 events. 1214/1909 cut-off events. For 2570/2570 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 9493 event pairs, 273 based on Foata normal form. 26/1932 useless extension candidates. Maximal degree in co-relation 5796. Up to 1519 conditions per place. [2024-06-28 03:35:10,415 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 62 selfloop transitions, 18 changer transitions 0/86 dead transitions. [2024-06-28 03:35:10,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 86 transitions, 517 flow [2024-06-28 03:35:10,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:35:10,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:35:10,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2024-06-28 03:35:10,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6291666666666667 [2024-06-28 03:35:10,417 INFO L175 Difference]: Start difference. First operand has 49 places, 48 transitions, 233 flow. Second operand 6 states and 151 transitions. [2024-06-28 03:35:10,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 86 transitions, 517 flow [2024-06-28 03:35:10,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 86 transitions, 509 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-06-28 03:35:10,420 INFO L231 Difference]: Finished difference. Result has 54 places, 49 transitions, 281 flow [2024-06-28 03:35:10,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=281, PETRI_PLACES=54, PETRI_TRANSITIONS=49} [2024-06-28 03:35:10,421 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 13 predicate places. [2024-06-28 03:35:10,421 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 49 transitions, 281 flow [2024-06-28 03:35:10,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 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) [2024-06-28 03:35:10,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:10,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:10,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 03:35:10,422 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)] === [2024-06-28 03:35:10,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:10,422 INFO L85 PathProgramCache]: Analyzing trace with hash 842700762, now seen corresponding path program 1 times [2024-06-28 03:35:10,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:10,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440481652] [2024-06-28 03:35:10,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:10,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:10,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:10,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:10,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:10,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440481652] [2024-06-28 03:35:10,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440481652] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:10,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:10,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:35:10,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53242516] [2024-06-28 03:35:10,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:10,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:35:10,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:10,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:35:10,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:35:10,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 40 [2024-06-28 03:35:10,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 49 transitions, 281 flow. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:10,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:10,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 40 [2024-06-28 03:35:10,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:11,330 INFO L124 PetriNetUnfolderBase]: 1034/1714 cut-off events. [2024-06-28 03:35:11,330 INFO L125 PetriNetUnfolderBase]: For 3193/3193 co-relation queries the response was YES. [2024-06-28 03:35:11,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5552 conditions, 1714 events. 1034/1714 cut-off events. For 3193/3193 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 8866 event pairs, 374 based on Foata normal form. 4/1717 useless extension candidates. Maximal degree in co-relation 5531. Up to 1569 conditions per place. [2024-06-28 03:35:11,340 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 47 selfloop transitions, 8 changer transitions 0/61 dead transitions. [2024-06-28 03:35:11,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 61 transitions, 421 flow [2024-06-28 03:35:11,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:35:11,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:35:11,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 99 transitions. [2024-06-28 03:35:11,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.495 [2024-06-28 03:35:11,343 INFO L175 Difference]: Start difference. First operand has 54 places, 49 transitions, 281 flow. Second operand 5 states and 99 transitions. [2024-06-28 03:35:11,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 61 transitions, 421 flow [2024-06-28 03:35:11,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 61 transitions, 377 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 03:35:11,349 INFO L231 Difference]: Finished difference. Result has 55 places, 49 transitions, 261 flow [2024-06-28 03:35:11,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=261, PETRI_PLACES=55, PETRI_TRANSITIONS=49} [2024-06-28 03:35:11,351 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 14 predicate places. [2024-06-28 03:35:11,351 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 49 transitions, 261 flow [2024-06-28 03:35:11,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:11,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:11,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:11,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 03:35:11,355 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)] === [2024-06-28 03:35:11,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:11,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1946005207, now seen corresponding path program 1 times [2024-06-28 03:35:11,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:11,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271154760] [2024-06-28 03:35:11,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:11,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:11,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:11,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:11,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:11,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271154760] [2024-06-28 03:35:11,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271154760] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:11,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:11,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:35:11,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746808878] [2024-06-28 03:35:11,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:11,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:35:11,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:11,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:35:11,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:35:12,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:35:12,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 49 transitions, 261 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:12,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:12,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:35:12,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:12,443 INFO L124 PetriNetUnfolderBase]: 1216/1913 cut-off events. [2024-06-28 03:35:12,443 INFO L125 PetriNetUnfolderBase]: For 4160/4160 co-relation queries the response was YES. [2024-06-28 03:35:12,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6248 conditions, 1913 events. 1216/1913 cut-off events. For 4160/4160 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 9475 event pairs, 392 based on Foata normal form. 8/1919 useless extension candidates. Maximal degree in co-relation 6225. Up to 1698 conditions per place. [2024-06-28 03:35:12,453 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 51 selfloop transitions, 19 changer transitions 0/75 dead transitions. [2024-06-28 03:35:12,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 75 transitions, 499 flow [2024-06-28 03:35:12,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:35:12,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:35:12,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 123 transitions. [2024-06-28 03:35:12,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5125 [2024-06-28 03:35:12,454 INFO L175 Difference]: Start difference. First operand has 55 places, 49 transitions, 261 flow. Second operand 6 states and 123 transitions. [2024-06-28 03:35:12,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 75 transitions, 499 flow [2024-06-28 03:35:12,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 75 transitions, 477 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 03:35:12,459 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 311 flow [2024-06-28 03:35:12,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=311, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2024-06-28 03:35:12,461 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 16 predicate places. [2024-06-28 03:35:12,461 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 311 flow [2024-06-28 03:35:12,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:12,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:12,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:12,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 03:35:12,462 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)] === [2024-06-28 03:35:12,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:12,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1913364039, now seen corresponding path program 2 times [2024-06-28 03:35:12,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:12,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477902841] [2024-06-28 03:35:12,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:12,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:12,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:12,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:12,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:12,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477902841] [2024-06-28 03:35:12,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477902841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:12,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:12,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:35:12,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555491234] [2024-06-28 03:35:12,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:12,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:35:12,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:12,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:35:12,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:35:13,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:35:13,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 311 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:13,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:13,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:35:13,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:13,484 INFO L124 PetriNetUnfolderBase]: 1184/1842 cut-off events. [2024-06-28 03:35:13,484 INFO L125 PetriNetUnfolderBase]: For 5084/5088 co-relation queries the response was YES. [2024-06-28 03:35:13,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6298 conditions, 1842 events. 1184/1842 cut-off events. For 5084/5088 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 8908 event pairs, 402 based on Foata normal form. 5/1843 useless extension candidates. Maximal degree in co-relation 6275. Up to 1650 conditions per place. [2024-06-28 03:35:13,495 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 45 selfloop transitions, 20 changer transitions 0/70 dead transitions. [2024-06-28 03:35:13,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 70 transitions, 485 flow [2024-06-28 03:35:13,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:35:13,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:35:13,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 119 transitions. [2024-06-28 03:35:13,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49583333333333335 [2024-06-28 03:35:13,497 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 311 flow. Second operand 6 states and 119 transitions. [2024-06-28 03:35:13,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 70 transitions, 485 flow [2024-06-28 03:35:13,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 70 transitions, 456 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 03:35:13,502 INFO L231 Difference]: Finished difference. Result has 60 places, 52 transitions, 330 flow [2024-06-28 03:35:13,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=330, PETRI_PLACES=60, PETRI_TRANSITIONS=52} [2024-06-28 03:35:13,503 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 19 predicate places. [2024-06-28 03:35:13,503 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 52 transitions, 330 flow [2024-06-28 03:35:13,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:13,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:13,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:13,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 03:35:13,504 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)] === [2024-06-28 03:35:13,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:13,504 INFO L85 PathProgramCache]: Analyzing trace with hash 372213887, now seen corresponding path program 1 times [2024-06-28 03:35:13,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:13,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742334742] [2024-06-28 03:35:13,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:13,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:13,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:14,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:14,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:14,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742334742] [2024-06-28 03:35:14,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742334742] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:14,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:14,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:35:14,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799018273] [2024-06-28 03:35:14,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:14,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:35:14,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:14,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:35:14,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:35:14,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 40 [2024-06-28 03:35:14,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 52 transitions, 330 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:14,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:14,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 40 [2024-06-28 03:35:14,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:14,849 INFO L124 PetriNetUnfolderBase]: 1006/1650 cut-off events. [2024-06-28 03:35:14,849 INFO L125 PetriNetUnfolderBase]: For 5040/5040 co-relation queries the response was YES. [2024-06-28 03:35:14,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5668 conditions, 1650 events. 1006/1650 cut-off events. For 5040/5040 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 8276 event pairs, 336 based on Foata normal form. 4/1653 useless extension candidates. Maximal degree in co-relation 5644. Up to 1497 conditions per place. [2024-06-28 03:35:14,879 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 58 selfloop transitions, 13 changer transitions 0/77 dead transitions. [2024-06-28 03:35:14,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 77 transitions, 559 flow [2024-06-28 03:35:14,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:35:14,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:35:14,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-28 03:35:14,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4785714285714286 [2024-06-28 03:35:14,894 INFO L175 Difference]: Start difference. First operand has 60 places, 52 transitions, 330 flow. Second operand 7 states and 134 transitions. [2024-06-28 03:35:14,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 77 transitions, 559 flow [2024-06-28 03:35:14,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 77 transitions, 489 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 03:35:14,899 INFO L231 Difference]: Finished difference. Result has 62 places, 57 transitions, 340 flow [2024-06-28 03:35:14,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=340, PETRI_PLACES=62, PETRI_TRANSITIONS=57} [2024-06-28 03:35:14,902 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 21 predicate places. [2024-06-28 03:35:14,903 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 57 transitions, 340 flow [2024-06-28 03:35:14,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:14,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:14,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:14,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 03:35:14,903 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:35:14,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:14,904 INFO L85 PathProgramCache]: Analyzing trace with hash -99673232, now seen corresponding path program 1 times [2024-06-28 03:35:14,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:14,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20116556] [2024-06-28 03:35:14,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:14,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:14,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:15,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:15,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:15,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20116556] [2024-06-28 03:35:15,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20116556] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:15,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:15,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:35:15,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405407367] [2024-06-28 03:35:15,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:15,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:35:15,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:15,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:35:15,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:35:15,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 40 [2024-06-28 03:35:15,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 57 transitions, 340 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:15,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:15,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 40 [2024-06-28 03:35:15,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:15,763 INFO L124 PetriNetUnfolderBase]: 1003/1646 cut-off events. [2024-06-28 03:35:15,763 INFO L125 PetriNetUnfolderBase]: For 5721/5721 co-relation queries the response was YES. [2024-06-28 03:35:15,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5861 conditions, 1646 events. 1003/1646 cut-off events. For 5721/5721 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 8268 event pairs, 347 based on Foata normal form. 1/1646 useless extension candidates. Maximal degree in co-relation 5835. Up to 1526 conditions per place. [2024-06-28 03:35:15,772 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 54 selfloop transitions, 8 changer transitions 0/68 dead transitions. [2024-06-28 03:35:15,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 68 transitions, 504 flow [2024-06-28 03:35:15,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:35:15,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:35:15,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 94 transitions. [2024-06-28 03:35:15,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47 [2024-06-28 03:35:15,773 INFO L175 Difference]: Start difference. First operand has 62 places, 57 transitions, 340 flow. Second operand 5 states and 94 transitions. [2024-06-28 03:35:15,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 68 transitions, 504 flow [2024-06-28 03:35:15,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 68 transitions, 471 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 03:35:15,779 INFO L231 Difference]: Finished difference. Result has 63 places, 60 transitions, 355 flow [2024-06-28 03:35:15,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=355, PETRI_PLACES=63, PETRI_TRANSITIONS=60} [2024-06-28 03:35:15,780 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 22 predicate places. [2024-06-28 03:35:15,780 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 60 transitions, 355 flow [2024-06-28 03:35:15,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:15,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:15,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:15,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 03:35:15,781 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)] === [2024-06-28 03:35:15,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:15,781 INFO L85 PathProgramCache]: Analyzing trace with hash -144824154, now seen corresponding path program 1 times [2024-06-28 03:35:15,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:15,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045956598] [2024-06-28 03:35:15,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:15,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:15,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:16,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:16,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:16,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045956598] [2024-06-28 03:35:16,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045956598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:16,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:16,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:35:16,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331667756] [2024-06-28 03:35:16,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:16,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:35:16,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:16,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:35:16,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:35:16,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:35:16,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 60 transitions, 355 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 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) [2024-06-28 03:35:16,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:16,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:35:16,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:16,913 INFO L124 PetriNetUnfolderBase]: 1314/2075 cut-off events. [2024-06-28 03:35:16,914 INFO L125 PetriNetUnfolderBase]: For 10131/10131 co-relation queries the response was YES. [2024-06-28 03:35:16,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7868 conditions, 2075 events. 1314/2075 cut-off events. For 10131/10131 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 10448 event pairs, 284 based on Foata normal form. 16/2089 useless extension candidates. Maximal degree in co-relation 7841. Up to 1419 conditions per place. [2024-06-28 03:35:16,924 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 70 selfloop transitions, 22 changer transitions 0/97 dead transitions. [2024-06-28 03:35:16,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 97 transitions, 695 flow [2024-06-28 03:35:16,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:35:16,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:35:16,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 145 transitions. [2024-06-28 03:35:16,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5178571428571429 [2024-06-28 03:35:16,926 INFO L175 Difference]: Start difference. First operand has 63 places, 60 transitions, 355 flow. Second operand 7 states and 145 transitions. [2024-06-28 03:35:16,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 97 transitions, 695 flow [2024-06-28 03:35:16,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 97 transitions, 669 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-28 03:35:16,934 INFO L231 Difference]: Finished difference. Result has 67 places, 62 transitions, 405 flow [2024-06-28 03:35:16,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=405, PETRI_PLACES=67, PETRI_TRANSITIONS=62} [2024-06-28 03:35:16,935 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 26 predicate places. [2024-06-28 03:35:16,937 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 62 transitions, 405 flow [2024-06-28 03:35:16,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 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) [2024-06-28 03:35:16,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:16,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:16,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 03:35:16,938 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)] === [2024-06-28 03:35:16,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:16,938 INFO L85 PathProgramCache]: Analyzing trace with hash -141967194, now seen corresponding path program 2 times [2024-06-28 03:35:16,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:16,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794131004] [2024-06-28 03:35:16,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:16,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:16,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:17,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:17,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:17,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794131004] [2024-06-28 03:35:17,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794131004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:17,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:17,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:35:17,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719414265] [2024-06-28 03:35:17,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:17,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:35:17,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:17,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:35:17,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:35:17,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:35:17,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 62 transitions, 405 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 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) [2024-06-28 03:35:17,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:17,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:35:17,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:18,056 INFO L124 PetriNetUnfolderBase]: 1356/2154 cut-off events. [2024-06-28 03:35:18,056 INFO L125 PetriNetUnfolderBase]: For 12306/12306 co-relation queries the response was YES. [2024-06-28 03:35:18,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8391 conditions, 2154 events. 1356/2154 cut-off events. For 12306/12306 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 11012 event pairs, 418 based on Foata normal form. 24/2176 useless extension candidates. Maximal degree in co-relation 8363. Up to 1806 conditions per place. [2024-06-28 03:35:18,068 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 65 selfloop transitions, 23 changer transitions 0/93 dead transitions. [2024-06-28 03:35:18,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 93 transitions, 681 flow [2024-06-28 03:35:18,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:35:18,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:35:18,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 142 transitions. [2024-06-28 03:35:18,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5071428571428571 [2024-06-28 03:35:18,070 INFO L175 Difference]: Start difference. First operand has 67 places, 62 transitions, 405 flow. Second operand 7 states and 142 transitions. [2024-06-28 03:35:18,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 93 transitions, 681 flow [2024-06-28 03:35:18,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 93 transitions, 651 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 03:35:18,082 INFO L231 Difference]: Finished difference. Result has 71 places, 64 transitions, 453 flow [2024-06-28 03:35:18,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=453, PETRI_PLACES=71, PETRI_TRANSITIONS=64} [2024-06-28 03:35:18,083 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 30 predicate places. [2024-06-28 03:35:18,083 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 64 transitions, 453 flow [2024-06-28 03:35:18,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 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) [2024-06-28 03:35:18,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:18,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:18,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 03:35:18,084 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:35:18,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:18,084 INFO L85 PathProgramCache]: Analyzing trace with hash -2083842937, now seen corresponding path program 1 times [2024-06-28 03:35:18,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:18,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972682434] [2024-06-28 03:35:18,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:18,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:18,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:18,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:18,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:18,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972682434] [2024-06-28 03:35:18,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972682434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:18,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:18,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:35:18,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401085820] [2024-06-28 03:35:18,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:18,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:35:18,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:18,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:35:18,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:35:18,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:35:18,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 64 transitions, 453 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:18,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:18,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:35:18,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:19,046 INFO L124 PetriNetUnfolderBase]: 1361/2166 cut-off events. [2024-06-28 03:35:19,047 INFO L125 PetriNetUnfolderBase]: For 12889/12889 co-relation queries the response was YES. [2024-06-28 03:35:19,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8813 conditions, 2166 events. 1361/2166 cut-off events. For 12889/12889 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 11027 event pairs, 473 based on Foata normal form. 1/2166 useless extension candidates. Maximal degree in co-relation 8783. Up to 2073 conditions per place. [2024-06-28 03:35:19,064 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 66 selfloop transitions, 11 changer transitions 0/82 dead transitions. [2024-06-28 03:35:19,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 82 transitions, 667 flow [2024-06-28 03:35:19,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:35:19,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:35:19,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 110 transitions. [2024-06-28 03:35:19,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-28 03:35:19,065 INFO L175 Difference]: Start difference. First operand has 71 places, 64 transitions, 453 flow. Second operand 6 states and 110 transitions. [2024-06-28 03:35:19,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 82 transitions, 667 flow [2024-06-28 03:35:19,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 82 transitions, 613 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 03:35:19,079 INFO L231 Difference]: Finished difference. Result has 72 places, 67 transitions, 455 flow [2024-06-28 03:35:19,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=455, PETRI_PLACES=72, PETRI_TRANSITIONS=67} [2024-06-28 03:35:19,080 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 31 predicate places. [2024-06-28 03:35:19,080 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 67 transitions, 455 flow [2024-06-28 03:35:19,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:19,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:19,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:19,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 03:35:19,081 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)] === [2024-06-28 03:35:19,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:19,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1595536336, now seen corresponding path program 1 times [2024-06-28 03:35:19,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:19,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324407939] [2024-06-28 03:35:19,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:19,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:19,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:19,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:19,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:19,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324407939] [2024-06-28 03:35:19,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324407939] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:19,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:19,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:35:19,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747915577] [2024-06-28 03:35:19,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:19,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:35:19,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:19,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:35:19,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:35:20,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:35:20,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 67 transitions, 455 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:20,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:20,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:35:20,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:20,699 INFO L124 PetriNetUnfolderBase]: 1389/2207 cut-off events. [2024-06-28 03:35:20,699 INFO L125 PetriNetUnfolderBase]: For 14784/14788 co-relation queries the response was YES. [2024-06-28 03:35:20,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9195 conditions, 2207 events. 1389/2207 cut-off events. For 14784/14788 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 11308 event pairs, 440 based on Foata normal form. 5/2208 useless extension candidates. Maximal degree in co-relation 9164. Up to 1967 conditions per place. [2024-06-28 03:35:20,710 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 65 selfloop transitions, 33 changer transitions 0/103 dead transitions. [2024-06-28 03:35:20,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 103 transitions, 803 flow [2024-06-28 03:35:20,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:35:20,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:35:20,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-28 03:35:20,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.478125 [2024-06-28 03:35:20,711 INFO L175 Difference]: Start difference. First operand has 72 places, 67 transitions, 455 flow. Second operand 8 states and 153 transitions. [2024-06-28 03:35:20,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 103 transitions, 803 flow [2024-06-28 03:35:20,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 103 transitions, 769 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-28 03:35:20,723 INFO L231 Difference]: Finished difference. Result has 77 places, 78 transitions, 599 flow [2024-06-28 03:35:20,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=599, PETRI_PLACES=77, PETRI_TRANSITIONS=78} [2024-06-28 03:35:20,724 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 36 predicate places. [2024-06-28 03:35:20,724 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 78 transitions, 599 flow [2024-06-28 03:35:20,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:20,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:20,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:20,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 03:35:20,724 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)] === [2024-06-28 03:35:20,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:20,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1365320416, now seen corresponding path program 2 times [2024-06-28 03:35:20,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:20,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440645961] [2024-06-28 03:35:20,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:20,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:20,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:21,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:21,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:21,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440645961] [2024-06-28 03:35:21,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440645961] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:21,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:21,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:35:21,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104188901] [2024-06-28 03:35:21,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:21,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:35:21,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:21,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:35:21,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:35:21,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:35:21,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 78 transitions, 599 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:21,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:21,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:35:21,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:22,177 INFO L124 PetriNetUnfolderBase]: 1422/2276 cut-off events. [2024-06-28 03:35:22,177 INFO L125 PetriNetUnfolderBase]: For 17303/17307 co-relation queries the response was YES. [2024-06-28 03:35:22,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9867 conditions, 2276 events. 1422/2276 cut-off events. For 17303/17307 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 11856 event pairs, 357 based on Foata normal form. 5/2277 useless extension candidates. Maximal degree in co-relation 9834. Up to 1851 conditions per place. [2024-06-28 03:35:22,189 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 69 selfloop transitions, 40 changer transitions 0/114 dead transitions. [2024-06-28 03:35:22,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 114 transitions, 1011 flow [2024-06-28 03:35:22,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:35:22,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:35:22,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2024-06-28 03:35:22,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.496875 [2024-06-28 03:35:22,191 INFO L175 Difference]: Start difference. First operand has 77 places, 78 transitions, 599 flow. Second operand 8 states and 159 transitions. [2024-06-28 03:35:22,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 114 transitions, 1011 flow [2024-06-28 03:35:22,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 114 transitions, 951 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-28 03:35:22,205 INFO L231 Difference]: Finished difference. Result has 83 places, 83 transitions, 713 flow [2024-06-28 03:35:22,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=541, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=713, PETRI_PLACES=83, PETRI_TRANSITIONS=83} [2024-06-28 03:35:22,206 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 42 predicate places. [2024-06-28 03:35:22,206 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 83 transitions, 713 flow [2024-06-28 03:35:22,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:22,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:22,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:22,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 03:35:22,207 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)] === [2024-06-28 03:35:22,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:22,207 INFO L85 PathProgramCache]: Analyzing trace with hash 978810432, now seen corresponding path program 3 times [2024-06-28 03:35:22,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:22,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584312591] [2024-06-28 03:35:22,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:22,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:22,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:23,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:23,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:23,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584312591] [2024-06-28 03:35:23,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584312591] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:23,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:23,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:35:23,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841450869] [2024-06-28 03:35:23,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:23,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:35:23,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:23,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:35:23,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:35:23,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:35:23,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 83 transitions, 713 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:23,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:23,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:35:23,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:23,651 INFO L124 PetriNetUnfolderBase]: 1414/2264 cut-off events. [2024-06-28 03:35:23,651 INFO L125 PetriNetUnfolderBase]: For 19482/19486 co-relation queries the response was YES. [2024-06-28 03:35:23,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10059 conditions, 2264 events. 1414/2264 cut-off events. For 19482/19486 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 11716 event pairs, 447 based on Foata normal form. 5/2265 useless extension candidates. Maximal degree in co-relation 10024. Up to 2014 conditions per place. [2024-06-28 03:35:23,664 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 71 selfloop transitions, 33 changer transitions 0/109 dead transitions. [2024-06-28 03:35:23,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 109 transitions, 994 flow [2024-06-28 03:35:23,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:35:23,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:35:23,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-28 03:35:23,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.478125 [2024-06-28 03:35:23,666 INFO L175 Difference]: Start difference. First operand has 83 places, 83 transitions, 713 flow. Second operand 8 states and 153 transitions. [2024-06-28 03:35:23,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 109 transitions, 994 flow [2024-06-28 03:35:23,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 109 transitions, 894 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-28 03:35:23,693 INFO L231 Difference]: Finished difference. Result has 87 places, 84 transitions, 705 flow [2024-06-28 03:35:23,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=615, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=705, PETRI_PLACES=87, PETRI_TRANSITIONS=84} [2024-06-28 03:35:23,694 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 46 predicate places. [2024-06-28 03:35:23,694 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 84 transitions, 705 flow [2024-06-28 03:35:23,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:23,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:23,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:23,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 03:35:23,695 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:35:23,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:23,695 INFO L85 PathProgramCache]: Analyzing trace with hash -2072415097, now seen corresponding path program 2 times [2024-06-28 03:35:23,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:23,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77421510] [2024-06-28 03:35:23,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:23,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:23,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:24,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:24,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:24,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77421510] [2024-06-28 03:35:24,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77421510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:24,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:24,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:35:24,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973853303] [2024-06-28 03:35:24,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:24,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:35:24,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:24,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:35:24,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:35:24,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:35:24,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 84 transitions, 705 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:24,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:24,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:35:24,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:24,696 INFO L124 PetriNetUnfolderBase]: 1411/2269 cut-off events. [2024-06-28 03:35:24,696 INFO L125 PetriNetUnfolderBase]: For 20705/20707 co-relation queries the response was YES. [2024-06-28 03:35:24,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10055 conditions, 2269 events. 1411/2269 cut-off events. For 20705/20707 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 11763 event pairs, 426 based on Foata normal form. 3/2271 useless extension candidates. Maximal degree in co-relation 10018. Up to 2153 conditions per place. [2024-06-28 03:35:24,708 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 78 selfloop transitions, 18 changer transitions 0/101 dead transitions. [2024-06-28 03:35:24,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 101 transitions, 974 flow [2024-06-28 03:35:24,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:35:24,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:35:24,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-06-28 03:35:24,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42142857142857143 [2024-06-28 03:35:24,709 INFO L175 Difference]: Start difference. First operand has 87 places, 84 transitions, 705 flow. Second operand 7 states and 118 transitions. [2024-06-28 03:35:24,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 101 transitions, 974 flow [2024-06-28 03:35:24,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 101 transitions, 899 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-28 03:35:24,728 INFO L231 Difference]: Finished difference. Result has 91 places, 92 transitions, 745 flow [2024-06-28 03:35:24,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=745, PETRI_PLACES=91, PETRI_TRANSITIONS=92} [2024-06-28 03:35:24,728 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 50 predicate places. [2024-06-28 03:35:24,729 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 92 transitions, 745 flow [2024-06-28 03:35:24,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:24,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:24,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:24,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 03:35:24,729 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:35:24,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:24,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1525868455, now seen corresponding path program 1 times [2024-06-28 03:35:24,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:24,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755512514] [2024-06-28 03:35:24,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:24,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:24,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:25,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:25,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:25,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755512514] [2024-06-28 03:35:25,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755512514] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:25,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:25,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:35:25,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075298065] [2024-06-28 03:35:25,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:25,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:35:25,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:25,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:35:25,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:35:25,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 40 [2024-06-28 03:35:25,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 92 transitions, 745 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:25,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:25,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 40 [2024-06-28 03:35:25,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:25,730 INFO L124 PetriNetUnfolderBase]: 1338/2202 cut-off events. [2024-06-28 03:35:25,730 INFO L125 PetriNetUnfolderBase]: For 23995/23995 co-relation queries the response was YES. [2024-06-28 03:35:25,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10039 conditions, 2202 events. 1338/2202 cut-off events. For 23995/23995 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 11692 event pairs, 396 based on Foata normal form. 3/2202 useless extension candidates. Maximal degree in co-relation 9999. Up to 2018 conditions per place. [2024-06-28 03:35:25,744 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 88 selfloop transitions, 11 changer transitions 0/108 dead transitions. [2024-06-28 03:35:25,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 108 transitions, 998 flow [2024-06-28 03:35:25,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:35:25,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:35:25,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 113 transitions. [2024-06-28 03:35:25,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4708333333333333 [2024-06-28 03:35:25,746 INFO L175 Difference]: Start difference. First operand has 91 places, 92 transitions, 745 flow. Second operand 6 states and 113 transitions. [2024-06-28 03:35:25,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 108 transitions, 998 flow [2024-06-28 03:35:25,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 108 transitions, 972 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-06-28 03:35:25,764 INFO L231 Difference]: Finished difference. Result has 96 places, 95 transitions, 771 flow [2024-06-28 03:35:25,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=719, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=771, PETRI_PLACES=96, PETRI_TRANSITIONS=95} [2024-06-28 03:35:25,764 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 55 predicate places. [2024-06-28 03:35:25,765 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 95 transitions, 771 flow [2024-06-28 03:35:25,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:25,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:25,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:25,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 03:35:25,765 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:35:25,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:25,766 INFO L85 PathProgramCache]: Analyzing trace with hash -2072409145, now seen corresponding path program 2 times [2024-06-28 03:35:25,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:25,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057694387] [2024-06-28 03:35:25,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:25,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:25,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:26,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:26,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:26,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057694387] [2024-06-28 03:35:26,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057694387] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:26,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:26,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:35:26,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143563255] [2024-06-28 03:35:26,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:26,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:35:26,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:26,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:35:26,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:35:26,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 40 [2024-06-28 03:35:26,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 95 transitions, 771 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:26,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:26,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 40 [2024-06-28 03:35:26,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:26,796 INFO L124 PetriNetUnfolderBase]: 1337/2204 cut-off events. [2024-06-28 03:35:26,796 INFO L125 PetriNetUnfolderBase]: For 26131/26133 co-relation queries the response was YES. [2024-06-28 03:35:26,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10407 conditions, 2204 events. 1337/2204 cut-off events. For 26131/26133 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 11744 event pairs, 399 based on Foata normal form. 5/2206 useless extension candidates. Maximal degree in co-relation 10364. Up to 2007 conditions per place. [2024-06-28 03:35:26,808 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 82 selfloop transitions, 18 changer transitions 0/109 dead transitions. [2024-06-28 03:35:26,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 109 transitions, 1028 flow [2024-06-28 03:35:26,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:35:26,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:35:26,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 113 transitions. [2024-06-28 03:35:26,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4708333333333333 [2024-06-28 03:35:26,810 INFO L175 Difference]: Start difference. First operand has 96 places, 95 transitions, 771 flow. Second operand 6 states and 113 transitions. [2024-06-28 03:35:26,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 109 transitions, 1028 flow [2024-06-28 03:35:26,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 109 transitions, 998 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 03:35:26,831 INFO L231 Difference]: Finished difference. Result has 98 places, 98 transitions, 814 flow [2024-06-28 03:35:26,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=741, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=814, PETRI_PLACES=98, PETRI_TRANSITIONS=98} [2024-06-28 03:35:26,831 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 57 predicate places. [2024-06-28 03:35:26,832 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 98 transitions, 814 flow [2024-06-28 03:35:26,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:26,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:26,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:26,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 03:35:26,832 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:35:26,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:26,832 INFO L85 PathProgramCache]: Analyzing trace with hash -2072401209, now seen corresponding path program 1 times [2024-06-28 03:35:26,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:26,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918909057] [2024-06-28 03:35:26,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:26,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:26,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:27,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:27,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:27,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918909057] [2024-06-28 03:35:27,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918909057] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:27,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:27,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:35:27,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178599389] [2024-06-28 03:35:27,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:27,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:35:27,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:27,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:35:27,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:35:27,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:35:27,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 98 transitions, 814 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:27,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:27,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:35:27,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:28,072 INFO L124 PetriNetUnfolderBase]: 1432/2301 cut-off events. [2024-06-28 03:35:28,072 INFO L125 PetriNetUnfolderBase]: For 27890/27890 co-relation queries the response was YES. [2024-06-28 03:35:28,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11160 conditions, 2301 events. 1432/2301 cut-off events. For 27890/27890 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 11962 event pairs, 426 based on Foata normal form. 1/2301 useless extension candidates. Maximal degree in co-relation 11116. Up to 2198 conditions per place. [2024-06-28 03:35:28,087 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 92 selfloop transitions, 14 changer transitions 0/111 dead transitions. [2024-06-28 03:35:28,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 111 transitions, 1085 flow [2024-06-28 03:35:28,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:35:28,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:35:28,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-06-28 03:35:28,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42142857142857143 [2024-06-28 03:35:28,089 INFO L175 Difference]: Start difference. First operand has 98 places, 98 transitions, 814 flow. Second operand 7 states and 118 transitions. [2024-06-28 03:35:28,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 111 transitions, 1085 flow [2024-06-28 03:35:28,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 111 transitions, 1036 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 03:35:28,112 INFO L231 Difference]: Finished difference. Result has 101 places, 101 transitions, 837 flow [2024-06-28 03:35:28,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=765, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=837, PETRI_PLACES=101, PETRI_TRANSITIONS=101} [2024-06-28 03:35:28,113 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 60 predicate places. [2024-06-28 03:35:28,113 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 101 transitions, 837 flow [2024-06-28 03:35:28,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:28,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:28,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:28,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 03:35:28,114 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)] === [2024-06-28 03:35:28,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:28,114 INFO L85 PathProgramCache]: Analyzing trace with hash -821230338, now seen corresponding path program 1 times [2024-06-28 03:35:28,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:28,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875097254] [2024-06-28 03:35:28,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:28,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:28,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:28,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:28,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:28,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875097254] [2024-06-28 03:35:28,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875097254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:28,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:28,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:35:28,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012967141] [2024-06-28 03:35:28,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:28,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:35:28,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:28,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:35:28,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:35:28,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:35:28,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 101 transitions, 837 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:28,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:28,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:35:28,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:29,454 INFO L124 PetriNetUnfolderBase]: 1542/2511 cut-off events. [2024-06-28 03:35:29,454 INFO L125 PetriNetUnfolderBase]: For 32264/32264 co-relation queries the response was YES. [2024-06-28 03:35:29,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12099 conditions, 2511 events. 1542/2511 cut-off events. For 32264/32264 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 13617 event pairs, 445 based on Foata normal form. 12/2521 useless extension candidates. Maximal degree in co-relation 12054. Up to 1940 conditions per place. [2024-06-28 03:35:29,467 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 100 selfloop transitions, 35 changer transitions 0/140 dead transitions. [2024-06-28 03:35:29,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 140 transitions, 1259 flow [2024-06-28 03:35:29,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:35:29,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:35:29,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-28 03:35:29,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49375 [2024-06-28 03:35:29,468 INFO L175 Difference]: Start difference. First operand has 101 places, 101 transitions, 837 flow. Second operand 8 states and 158 transitions. [2024-06-28 03:35:29,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 140 transitions, 1259 flow [2024-06-28 03:35:29,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 140 transitions, 1189 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-28 03:35:29,494 INFO L231 Difference]: Finished difference. Result has 105 places, 107 transitions, 932 flow [2024-06-28 03:35:29,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=767, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=932, PETRI_PLACES=105, PETRI_TRANSITIONS=107} [2024-06-28 03:35:29,494 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 64 predicate places. [2024-06-28 03:35:29,495 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 107 transitions, 932 flow [2024-06-28 03:35:29,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:29,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:29,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:29,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 03:35:29,495 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:35:29,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:29,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1553648935, now seen corresponding path program 1 times [2024-06-28 03:35:29,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:29,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42603884] [2024-06-28 03:35:29,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:29,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:29,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:30,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:30,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:30,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42603884] [2024-06-28 03:35:30,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42603884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:30,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:30,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:35:30,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474137523] [2024-06-28 03:35:30,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:30,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:35:30,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:30,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:35:30,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:35:30,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:35:30,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 107 transitions, 932 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:30,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:30,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:35:30,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:30,534 INFO L124 PetriNetUnfolderBase]: 1557/2539 cut-off events. [2024-06-28 03:35:30,535 INFO L125 PetriNetUnfolderBase]: For 34870/34872 co-relation queries the response was YES. [2024-06-28 03:35:30,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12758 conditions, 2539 events. 1557/2539 cut-off events. For 34870/34872 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 13824 event pairs, 457 based on Foata normal form. 5/2543 useless extension candidates. Maximal degree in co-relation 12711. Up to 2324 conditions per place. [2024-06-28 03:35:30,550 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 105 selfloop transitions, 25 changer transitions 0/135 dead transitions. [2024-06-28 03:35:30,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 135 transitions, 1315 flow [2024-06-28 03:35:30,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:35:30,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:35:30,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-28 03:35:30,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2024-06-28 03:35:30,552 INFO L175 Difference]: Start difference. First operand has 105 places, 107 transitions, 932 flow. Second operand 7 states and 136 transitions. [2024-06-28 03:35:30,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 135 transitions, 1315 flow [2024-06-28 03:35:30,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 135 transitions, 1262 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-28 03:35:30,585 INFO L231 Difference]: Finished difference. Result has 109 places, 113 transitions, 1014 flow [2024-06-28 03:35:30,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=881, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1014, PETRI_PLACES=109, PETRI_TRANSITIONS=113} [2024-06-28 03:35:30,585 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 68 predicate places. [2024-06-28 03:35:30,585 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 113 transitions, 1014 flow [2024-06-28 03:35:30,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:30,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:30,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:30,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 03:35:30,586 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:35:30,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:30,586 INFO L85 PathProgramCache]: Analyzing trace with hash -728375719, now seen corresponding path program 2 times [2024-06-28 03:35:30,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:30,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081653496] [2024-06-28 03:35:30,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:30,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:30,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:31,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:31,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:31,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081653496] [2024-06-28 03:35:31,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081653496] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:31,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:31,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:35:31,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442871662] [2024-06-28 03:35:31,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:31,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:35:31,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:31,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:35:31,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:35:31,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:35:31,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 113 transitions, 1014 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:31,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:31,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:35:31,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:31,708 INFO L124 PetriNetUnfolderBase]: 1608/2624 cut-off events. [2024-06-28 03:35:31,709 INFO L125 PetriNetUnfolderBase]: For 38662/38664 co-relation queries the response was YES. [2024-06-28 03:35:31,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13666 conditions, 2624 events. 1608/2624 cut-off events. For 38662/38664 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 14416 event pairs, 458 based on Foata normal form. 5/2628 useless extension candidates. Maximal degree in co-relation 13618. Up to 2352 conditions per place. [2024-06-28 03:35:31,725 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 106 selfloop transitions, 29 changer transitions 0/140 dead transitions. [2024-06-28 03:35:31,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 140 transitions, 1467 flow [2024-06-28 03:35:31,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:35:31,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:35:31,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2024-06-28 03:35:31,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-06-28 03:35:31,727 INFO L175 Difference]: Start difference. First operand has 109 places, 113 transitions, 1014 flow. Second operand 7 states and 133 transitions. [2024-06-28 03:35:31,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 140 transitions, 1467 flow [2024-06-28 03:35:31,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 140 transitions, 1413 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-28 03:35:31,759 INFO L231 Difference]: Finished difference. Result has 114 places, 121 transitions, 1132 flow [2024-06-28 03:35:31,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=960, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1132, PETRI_PLACES=114, PETRI_TRANSITIONS=121} [2024-06-28 03:35:31,759 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 73 predicate places. [2024-06-28 03:35:31,760 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 121 transitions, 1132 flow [2024-06-28 03:35:31,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:31,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:31,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:31,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 03:35:31,760 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:35:31,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:31,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1390249251, now seen corresponding path program 1 times [2024-06-28 03:35:31,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:31,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618834276] [2024-06-28 03:35:31,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:31,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:31,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:32,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:32,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:32,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618834276] [2024-06-28 03:35:32,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618834276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:32,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:32,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:35:32,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875311651] [2024-06-28 03:35:32,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:32,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:35:32,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:32,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:35:32,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:35:32,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:35:32,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 121 transitions, 1132 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:32,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:32,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:35:32,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:32,899 INFO L124 PetriNetUnfolderBase]: 1613/2630 cut-off events. [2024-06-28 03:35:32,900 INFO L125 PetriNetUnfolderBase]: For 42455/42455 co-relation queries the response was YES. [2024-06-28 03:35:32,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14427 conditions, 2630 events. 1613/2630 cut-off events. For 42455/42455 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 14380 event pairs, 458 based on Foata normal form. 1/2630 useless extension candidates. Maximal degree in co-relation 14377. Up to 2470 conditions per place. [2024-06-28 03:35:32,914 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 119 selfloop transitions, 15 changer transitions 0/139 dead transitions. [2024-06-28 03:35:32,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 139 transitions, 1487 flow [2024-06-28 03:35:32,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:35:32,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:35:32,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-28 03:35:32,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44285714285714284 [2024-06-28 03:35:32,915 INFO L175 Difference]: Start difference. First operand has 114 places, 121 transitions, 1132 flow. Second operand 7 states and 124 transitions. [2024-06-28 03:35:32,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 139 transitions, 1487 flow [2024-06-28 03:35:32,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 139 transitions, 1426 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-06-28 03:35:32,952 INFO L231 Difference]: Finished difference. Result has 118 places, 124 transitions, 1159 flow [2024-06-28 03:35:32,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1071, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1159, PETRI_PLACES=118, PETRI_TRANSITIONS=124} [2024-06-28 03:35:32,952 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 77 predicate places. [2024-06-28 03:35:32,953 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 124 transitions, 1159 flow [2024-06-28 03:35:32,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:32,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:32,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:32,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 03:35:32,953 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)] === [2024-06-28 03:35:32,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:32,953 INFO L85 PathProgramCache]: Analyzing trace with hash 385746822, now seen corresponding path program 2 times [2024-06-28 03:35:32,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:32,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173493949] [2024-06-28 03:35:32,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:32,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:32,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:33,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:33,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:33,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173493949] [2024-06-28 03:35:33,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173493949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:33,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:33,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:35:33,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206784606] [2024-06-28 03:35:33,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:33,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:35:33,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:33,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:35:33,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:35:33,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:35:33,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 124 transitions, 1159 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:33,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:33,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:35:33,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:34,324 INFO L124 PetriNetUnfolderBase]: 1593/2598 cut-off events. [2024-06-28 03:35:34,324 INFO L125 PetriNetUnfolderBase]: For 45298/45298 co-relation queries the response was YES. [2024-06-28 03:35:34,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14357 conditions, 2598 events. 1593/2598 cut-off events. For 45298/45298 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 14149 event pairs, 279 based on Foata normal form. 12/2608 useless extension candidates. Maximal degree in co-relation 14305. Up to 1591 conditions per place. [2024-06-28 03:35:34,341 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 109 selfloop transitions, 40 changer transitions 0/154 dead transitions. [2024-06-28 03:35:34,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 154 transitions, 1560 flow [2024-06-28 03:35:34,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:35:34,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:35:34,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 142 transitions. [2024-06-28 03:35:34,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5071428571428571 [2024-06-28 03:35:34,343 INFO L175 Difference]: Start difference. First operand has 118 places, 124 transitions, 1159 flow. Second operand 7 states and 142 transitions. [2024-06-28 03:35:34,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 154 transitions, 1560 flow [2024-06-28 03:35:34,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 154 transitions, 1488 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-28 03:35:34,383 INFO L231 Difference]: Finished difference. Result has 120 places, 124 transitions, 1176 flow [2024-06-28 03:35:34,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1087, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1176, PETRI_PLACES=120, PETRI_TRANSITIONS=124} [2024-06-28 03:35:34,383 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 79 predicate places. [2024-06-28 03:35:34,383 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 124 transitions, 1176 flow [2024-06-28 03:35:34,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:34,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:34,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:34,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 03:35:34,384 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)] === [2024-06-28 03:35:34,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:34,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1950610494, now seen corresponding path program 3 times [2024-06-28 03:35:34,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:34,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108794443] [2024-06-28 03:35:34,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:34,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:34,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:35,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:35,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:35,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108794443] [2024-06-28 03:35:35,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108794443] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:35,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:35,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:35:35,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247554557] [2024-06-28 03:35:35,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:35,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:35:35,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:35,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:35:35,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:35:35,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:35:35,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 124 transitions, 1176 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:35,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:35,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:35:35,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:35,529 INFO L124 PetriNetUnfolderBase]: 1573/2568 cut-off events. [2024-06-28 03:35:35,529 INFO L125 PetriNetUnfolderBase]: For 46980/46980 co-relation queries the response was YES. [2024-06-28 03:35:35,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14321 conditions, 2568 events. 1573/2568 cut-off events. For 46980/46980 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 13991 event pairs, 261 based on Foata normal form. 12/2578 useless extension candidates. Maximal degree in co-relation 14268. Up to 1449 conditions per place. [2024-06-28 03:35:35,546 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 104 selfloop transitions, 39 changer transitions 0/148 dead transitions. [2024-06-28 03:35:35,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 148 transitions, 1516 flow [2024-06-28 03:35:35,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:35:35,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:35:35,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-28 03:35:35,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4785714285714286 [2024-06-28 03:35:35,547 INFO L175 Difference]: Start difference. First operand has 120 places, 124 transitions, 1176 flow. Second operand 7 states and 134 transitions. [2024-06-28 03:35:35,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 148 transitions, 1516 flow [2024-06-28 03:35:35,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 148 transitions, 1412 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 03:35:35,586 INFO L231 Difference]: Finished difference. Result has 120 places, 123 transitions, 1122 flow [2024-06-28 03:35:35,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1040, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1122, PETRI_PLACES=120, PETRI_TRANSITIONS=123} [2024-06-28 03:35:35,586 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 79 predicate places. [2024-06-28 03:35:35,587 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 123 transitions, 1122 flow [2024-06-28 03:35:35,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:35,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:35,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:35,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 03:35:35,587 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:35:35,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:35,588 INFO L85 PathProgramCache]: Analyzing trace with hash 179642681, now seen corresponding path program 3 times [2024-06-28 03:35:35,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:35,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274050788] [2024-06-28 03:35:35,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:35,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:35,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:36,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:36,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:36,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274050788] [2024-06-28 03:35:36,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274050788] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:36,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:36,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:35:36,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594214066] [2024-06-28 03:35:36,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:36,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:35:36,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:36,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:35:36,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:35:36,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:35:36,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 123 transitions, 1122 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:36,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:36,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:35:36,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:36,543 INFO L124 PetriNetUnfolderBase]: 1600/2615 cut-off events. [2024-06-28 03:35:36,544 INFO L125 PetriNetUnfolderBase]: For 45079/45081 co-relation queries the response was YES. [2024-06-28 03:35:36,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14486 conditions, 2615 events. 1600/2615 cut-off events. For 45079/45081 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 14384 event pairs, 459 based on Foata normal form. 5/2619 useless extension candidates. Maximal degree in co-relation 14432. Up to 2275 conditions per place. [2024-06-28 03:35:36,561 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 105 selfloop transitions, 41 changer transitions 0/151 dead transitions. [2024-06-28 03:35:36,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 151 transitions, 1686 flow [2024-06-28 03:35:36,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:35:36,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:35:36,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 131 transitions. [2024-06-28 03:35:36,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46785714285714286 [2024-06-28 03:35:36,562 INFO L175 Difference]: Start difference. First operand has 120 places, 123 transitions, 1122 flow. Second operand 7 states and 131 transitions. [2024-06-28 03:35:36,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 151 transitions, 1686 flow [2024-06-28 03:35:36,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 151 transitions, 1575 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 03:35:36,598 INFO L231 Difference]: Finished difference. Result has 123 places, 136 transitions, 1280 flow [2024-06-28 03:35:36,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1011, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1280, PETRI_PLACES=123, PETRI_TRANSITIONS=136} [2024-06-28 03:35:36,598 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 82 predicate places. [2024-06-28 03:35:36,599 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 136 transitions, 1280 flow [2024-06-28 03:35:36,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:36,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:36,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:36,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 03:35:36,599 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:35:36,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:36,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1400426241, now seen corresponding path program 2 times [2024-06-28 03:35:36,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:36,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027908267] [2024-06-28 03:35:36,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:36,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:36,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:37,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:37,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:37,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027908267] [2024-06-28 03:35:37,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027908267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:37,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:37,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:35:37,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491959484] [2024-06-28 03:35:37,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:37,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:35:37,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:37,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:35:37,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:35:37,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:35:37,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 136 transitions, 1280 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:37,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:37,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:35:37,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:37,607 INFO L124 PetriNetUnfolderBase]: 1605/2619 cut-off events. [2024-06-28 03:35:37,608 INFO L125 PetriNetUnfolderBase]: For 49108/49112 co-relation queries the response was YES. [2024-06-28 03:35:37,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14977 conditions, 2619 events. 1605/2619 cut-off events. For 49108/49112 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 14304 event pairs, 443 based on Foata normal form. 5/2623 useless extension candidates. Maximal degree in co-relation 14921. Up to 2435 conditions per place. [2024-06-28 03:35:37,625 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 120 selfloop transitions, 27 changer transitions 0/152 dead transitions. [2024-06-28 03:35:37,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 152 transitions, 1760 flow [2024-06-28 03:35:37,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:35:37,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:35:37,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-06-28 03:35:37,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4357142857142857 [2024-06-28 03:35:37,626 INFO L175 Difference]: Start difference. First operand has 123 places, 136 transitions, 1280 flow. Second operand 7 states and 122 transitions. [2024-06-28 03:35:37,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 152 transitions, 1760 flow [2024-06-28 03:35:37,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 152 transitions, 1677 flow, removed 34 selfloop flow, removed 2 redundant places. [2024-06-28 03:35:37,672 INFO L231 Difference]: Finished difference. Result has 128 places, 142 transitions, 1375 flow [2024-06-28 03:35:37,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1197, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1375, PETRI_PLACES=128, PETRI_TRANSITIONS=142} [2024-06-28 03:35:37,672 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 87 predicate places. [2024-06-28 03:35:37,672 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 142 transitions, 1375 flow [2024-06-28 03:35:37,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:37,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:37,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:37,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 03:35:37,673 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:35:37,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:37,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1541258173, now seen corresponding path program 3 times [2024-06-28 03:35:37,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:37,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553971431] [2024-06-28 03:35:37,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:37,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:37,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:38,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:38,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:38,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553971431] [2024-06-28 03:35:38,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553971431] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:38,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:38,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:35:38,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978876373] [2024-06-28 03:35:38,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:38,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:35:38,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:38,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:35:38,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:35:38,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:35:38,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 142 transitions, 1375 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:38,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:38,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:35:38,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:38,922 INFO L124 PetriNetUnfolderBase]: 1602/2611 cut-off events. [2024-06-28 03:35:38,922 INFO L125 PetriNetUnfolderBase]: For 50963/50963 co-relation queries the response was YES. [2024-06-28 03:35:38,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14786 conditions, 2611 events. 1602/2611 cut-off events. For 50963/50963 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 14215 event pairs, 438 based on Foata normal form. 1/2611 useless extension candidates. Maximal degree in co-relation 14728. Up to 2459 conditions per place. [2024-06-28 03:35:38,938 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 133 selfloop transitions, 14 changer transitions 0/152 dead transitions. [2024-06-28 03:35:38,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 152 transitions, 1696 flow [2024-06-28 03:35:38,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:35:38,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:35:38,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 117 transitions. [2024-06-28 03:35:38,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41785714285714287 [2024-06-28 03:35:38,940 INFO L175 Difference]: Start difference. First operand has 128 places, 142 transitions, 1375 flow. Second operand 7 states and 117 transitions. [2024-06-28 03:35:38,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 152 transitions, 1696 flow [2024-06-28 03:35:38,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 152 transitions, 1581 flow, removed 47 selfloop flow, removed 3 redundant places. [2024-06-28 03:35:38,993 INFO L231 Difference]: Finished difference. Result has 132 places, 142 transitions, 1294 flow [2024-06-28 03:35:38,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1260, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1294, PETRI_PLACES=132, PETRI_TRANSITIONS=142} [2024-06-28 03:35:38,994 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 91 predicate places. [2024-06-28 03:35:38,994 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 142 transitions, 1294 flow [2024-06-28 03:35:38,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:38,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:38,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:38,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 03:35:38,995 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:35:38,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:38,995 INFO L85 PathProgramCache]: Analyzing trace with hash 2575889, now seen corresponding path program 1 times [2024-06-28 03:35:38,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:38,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468825287] [2024-06-28 03:35:38,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:38,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:39,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:39,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:39,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:39,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468825287] [2024-06-28 03:35:39,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468825287] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:39,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:39,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:35:39,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614648127] [2024-06-28 03:35:39,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:39,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:35:39,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:39,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:35:39,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:35:39,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 40 [2024-06-28 03:35:39,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 142 transitions, 1294 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:39,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:39,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 40 [2024-06-28 03:35:39,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:40,121 INFO L124 PetriNetUnfolderBase]: 1537/2544 cut-off events. [2024-06-28 03:35:40,121 INFO L125 PetriNetUnfolderBase]: For 54952/54960 co-relation queries the response was YES. [2024-06-28 03:35:40,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14512 conditions, 2544 events. 1537/2544 cut-off events. For 54952/54960 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 14130 event pairs, 408 based on Foata normal form. 2/2531 useless extension candidates. Maximal degree in co-relation 14452. Up to 2274 conditions per place. [2024-06-28 03:35:40,138 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 132 selfloop transitions, 14 changer transitions 0/161 dead transitions. [2024-06-28 03:35:40,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 161 transitions, 1669 flow [2024-06-28 03:35:40,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:35:40,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:35:40,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-28 03:35:40,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4607142857142857 [2024-06-28 03:35:40,140 INFO L175 Difference]: Start difference. First operand has 132 places, 142 transitions, 1294 flow. Second operand 7 states and 129 transitions. [2024-06-28 03:35:40,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 161 transitions, 1669 flow [2024-06-28 03:35:40,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 161 transitions, 1631 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 03:35:40,192 INFO L231 Difference]: Finished difference. Result has 133 places, 145 transitions, 1336 flow [2024-06-28 03:35:40,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1256, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1336, PETRI_PLACES=133, PETRI_TRANSITIONS=145} [2024-06-28 03:35:40,192 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 92 predicate places. [2024-06-28 03:35:40,193 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 145 transitions, 1336 flow [2024-06-28 03:35:40,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:40,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:40,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:40,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 03:35:40,193 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:35:40,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:40,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1541243293, now seen corresponding path program 1 times [2024-06-28 03:35:40,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:40,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81242685] [2024-06-28 03:35:40,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:40,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:40,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:41,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:41,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:41,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81242685] [2024-06-28 03:35:41,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81242685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:41,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:41,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:35:41,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168776648] [2024-06-28 03:35:41,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:41,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:35:41,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:41,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:35:41,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:35:41,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:35:41,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 145 transitions, 1336 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:41,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:41,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:35:41,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:41,601 INFO L124 PetriNetUnfolderBase]: 1591/2598 cut-off events. [2024-06-28 03:35:41,601 INFO L125 PetriNetUnfolderBase]: For 57133/57133 co-relation queries the response was YES. [2024-06-28 03:35:41,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15016 conditions, 2598 events. 1591/2598 cut-off events. For 57133/57133 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 14164 event pairs, 433 based on Foata normal form. 2/2599 useless extension candidates. Maximal degree in co-relation 14955. Up to 2438 conditions per place. [2024-06-28 03:35:41,620 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 138 selfloop transitions, 16 changer transitions 0/159 dead transitions. [2024-06-28 03:35:41,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 159 transitions, 1721 flow [2024-06-28 03:35:41,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:35:41,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:35:41,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2024-06-28 03:35:41,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-28 03:35:41,622 INFO L175 Difference]: Start difference. First operand has 133 places, 145 transitions, 1336 flow. Second operand 8 states and 131 transitions. [2024-06-28 03:35:41,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 159 transitions, 1721 flow [2024-06-28 03:35:41,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 159 transitions, 1667 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-28 03:35:41,683 INFO L231 Difference]: Finished difference. Result has 136 places, 147 transitions, 1369 flow [2024-06-28 03:35:41,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1282, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1369, PETRI_PLACES=136, PETRI_TRANSITIONS=147} [2024-06-28 03:35:41,684 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 95 predicate places. [2024-06-28 03:35:41,684 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 147 transitions, 1369 flow [2024-06-28 03:35:41,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:41,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:41,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:41,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 03:35:41,685 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:35:41,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:41,685 INFO L85 PathProgramCache]: Analyzing trace with hash 967711164, now seen corresponding path program 1 times [2024-06-28 03:35:41,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:41,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594179606] [2024-06-28 03:35:41,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:41,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:41,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:42,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:42,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:42,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594179606] [2024-06-28 03:35:42,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594179606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:42,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:42,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:35:42,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261701520] [2024-06-28 03:35:42,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:42,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:35:42,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:42,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:35:42,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:35:42,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:35:42,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 147 transitions, 1369 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:42,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:42,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:35:42,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:42,868 INFO L124 PetriNetUnfolderBase]: 1611/2631 cut-off events. [2024-06-28 03:35:42,868 INFO L125 PetriNetUnfolderBase]: For 61474/61476 co-relation queries the response was YES. [2024-06-28 03:35:42,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15388 conditions, 2631 events. 1611/2631 cut-off events. For 61474/61476 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 14370 event pairs, 433 based on Foata normal form. 6/2636 useless extension candidates. Maximal degree in co-relation 15326. Up to 2389 conditions per place. [2024-06-28 03:35:42,888 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 143 selfloop transitions, 23 changer transitions 0/171 dead transitions. [2024-06-28 03:35:42,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 171 transitions, 1814 flow [2024-06-28 03:35:42,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:35:42,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:35:42,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-06-28 03:35:42,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4714285714285714 [2024-06-28 03:35:42,889 INFO L175 Difference]: Start difference. First operand has 136 places, 147 transitions, 1369 flow. Second operand 7 states and 132 transitions. [2024-06-28 03:35:42,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 171 transitions, 1814 flow [2024-06-28 03:35:42,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 171 transitions, 1743 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-28 03:35:42,962 INFO L231 Difference]: Finished difference. Result has 137 places, 151 transitions, 1413 flow [2024-06-28 03:35:42,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1298, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1413, PETRI_PLACES=137, PETRI_TRANSITIONS=151} [2024-06-28 03:35:42,962 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 96 predicate places. [2024-06-28 03:35:42,962 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 151 transitions, 1413 flow [2024-06-28 03:35:42,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:42,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:42,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:42,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 03:35:42,963 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:35:42,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:42,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1118258586, now seen corresponding path program 2 times [2024-06-28 03:35:42,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:42,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169053143] [2024-06-28 03:35:42,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:42,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:42,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:43,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:43,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:43,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169053143] [2024-06-28 03:35:43,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169053143] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:43,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:43,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:35:43,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492448677] [2024-06-28 03:35:43,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:43,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:35:43,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:43,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:35:43,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:35:43,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:35:43,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 151 transitions, 1413 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:43,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:43,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:35:43,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:44,083 INFO L124 PetriNetUnfolderBase]: 1615/2639 cut-off events. [2024-06-28 03:35:44,083 INFO L125 PetriNetUnfolderBase]: For 64013/64015 co-relation queries the response was YES. [2024-06-28 03:35:44,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15542 conditions, 2639 events. 1615/2639 cut-off events. For 64013/64015 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 14420 event pairs, 434 based on Foata normal form. 6/2644 useless extension candidates. Maximal degree in co-relation 15479. Up to 2338 conditions per place. [2024-06-28 03:35:44,102 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 133 selfloop transitions, 35 changer transitions 0/173 dead transitions. [2024-06-28 03:35:44,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 173 transitions, 1918 flow [2024-06-28 03:35:44,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:35:44,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:35:44,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-06-28 03:35:44,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4714285714285714 [2024-06-28 03:35:44,104 INFO L175 Difference]: Start difference. First operand has 137 places, 151 transitions, 1413 flow. Second operand 7 states and 132 transitions. [2024-06-28 03:35:44,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 173 transitions, 1918 flow [2024-06-28 03:35:44,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 173 transitions, 1860 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-28 03:35:44,216 INFO L231 Difference]: Finished difference. Result has 140 places, 154 transitions, 1486 flow [2024-06-28 03:35:44,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1355, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1486, PETRI_PLACES=140, PETRI_TRANSITIONS=154} [2024-06-28 03:35:44,217 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 99 predicate places. [2024-06-28 03:35:44,217 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 154 transitions, 1486 flow [2024-06-28 03:35:44,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:44,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:44,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:44,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 03:35:44,218 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:35:44,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:44,218 INFO L85 PathProgramCache]: Analyzing trace with hash -61384517, now seen corresponding path program 1 times [2024-06-28 03:35:44,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:44,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307956075] [2024-06-28 03:35:44,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:44,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:44,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:44,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:44,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:44,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307956075] [2024-06-28 03:35:44,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307956075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:44,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:44,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:35:44,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791387709] [2024-06-28 03:35:44,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:44,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:35:44,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:44,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:35:44,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:35:44,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:35:44,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 154 transitions, 1486 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:44,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:44,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:35:44,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:45,415 INFO L124 PetriNetUnfolderBase]: 1630/2660 cut-off events. [2024-06-28 03:35:45,415 INFO L125 PetriNetUnfolderBase]: For 67621/67623 co-relation queries the response was YES. [2024-06-28 03:35:45,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15814 conditions, 2660 events. 1630/2660 cut-off events. For 67621/67623 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 14566 event pairs, 433 based on Foata normal form. 5/2664 useless extension candidates. Maximal degree in co-relation 15751. Up to 2408 conditions per place. [2024-06-28 03:35:45,432 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 148 selfloop transitions, 29 changer transitions 0/182 dead transitions. [2024-06-28 03:35:45,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 182 transitions, 1979 flow [2024-06-28 03:35:45,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:35:45,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:35:45,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-28 03:35:45,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.471875 [2024-06-28 03:35:45,434 INFO L175 Difference]: Start difference. First operand has 140 places, 154 transitions, 1486 flow. Second operand 8 states and 151 transitions. [2024-06-28 03:35:45,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 182 transitions, 1979 flow [2024-06-28 03:35:45,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 182 transitions, 1904 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-28 03:35:45,490 INFO L231 Difference]: Finished difference. Result has 144 places, 158 transitions, 1550 flow [2024-06-28 03:35:45,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1411, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1550, PETRI_PLACES=144, PETRI_TRANSITIONS=158} [2024-06-28 03:35:45,490 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 103 predicate places. [2024-06-28 03:35:45,491 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 158 transitions, 1550 flow [2024-06-28 03:35:45,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:45,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:45,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:45,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 03:35:45,491 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:35:45,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:45,492 INFO L85 PathProgramCache]: Analyzing trace with hash 148043909, now seen corresponding path program 2 times [2024-06-28 03:35:45,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:45,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703104306] [2024-06-28 03:35:45,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:45,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:45,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:46,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:46,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:46,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703104306] [2024-06-28 03:35:46,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703104306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:46,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:46,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:35:46,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72646675] [2024-06-28 03:35:46,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:46,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:35:46,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:46,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:35:46,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:35:46,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:35:46,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 158 transitions, 1550 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:46,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:46,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:35:46,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:46,713 INFO L124 PetriNetUnfolderBase]: 1705/2776 cut-off events. [2024-06-28 03:35:46,714 INFO L125 PetriNetUnfolderBase]: For 76447/76449 co-relation queries the response was YES. [2024-06-28 03:35:46,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17203 conditions, 2776 events. 1705/2776 cut-off events. For 76447/76449 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 15317 event pairs, 437 based on Foata normal form. 5/2780 useless extension candidates. Maximal degree in co-relation 17139. Up to 2373 conditions per place. [2024-06-28 03:35:46,735 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 139 selfloop transitions, 48 changer transitions 0/192 dead transitions. [2024-06-28 03:35:46,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 192 transitions, 2333 flow [2024-06-28 03:35:46,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:35:46,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:35:46,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-28 03:35:46,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.471875 [2024-06-28 03:35:46,737 INFO L175 Difference]: Start difference. First operand has 144 places, 158 transitions, 1550 flow. Second operand 8 states and 151 transitions. [2024-06-28 03:35:46,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 192 transitions, 2333 flow [2024-06-28 03:35:46,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 192 transitions, 2222 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-28 03:35:46,812 INFO L231 Difference]: Finished difference. Result has 147 places, 170 transitions, 1791 flow [2024-06-28 03:35:46,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1439, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1791, PETRI_PLACES=147, PETRI_TRANSITIONS=170} [2024-06-28 03:35:46,812 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 106 predicate places. [2024-06-28 03:35:46,813 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 170 transitions, 1791 flow [2024-06-28 03:35:46,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:46,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:46,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:46,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 03:35:46,813 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:35:46,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:46,814 INFO L85 PathProgramCache]: Analyzing trace with hash 148055472, now seen corresponding path program 1 times [2024-06-28 03:35:46,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:46,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224537276] [2024-06-28 03:35:46,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:46,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:46,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:47,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:47,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:47,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224537276] [2024-06-28 03:35:47,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224537276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:47,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:47,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:35:47,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647279934] [2024-06-28 03:35:47,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:47,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:35:47,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:47,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:35:47,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:35:47,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:35:47,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 170 transitions, 1791 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:47,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:47,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:35:47,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:48,107 INFO L124 PetriNetUnfolderBase]: 1710/2780 cut-off events. [2024-06-28 03:35:48,107 INFO L125 PetriNetUnfolderBase]: For 82560/82560 co-relation queries the response was YES. [2024-06-28 03:35:48,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17950 conditions, 2780 events. 1710/2780 cut-off events. For 82560/82560 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 15307 event pairs, 445 based on Foata normal form. 1/2780 useless extension candidates. Maximal degree in co-relation 17884. Up to 2595 conditions per place. [2024-06-28 03:35:48,129 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 166 selfloop transitions, 18 changer transitions 0/189 dead transitions. [2024-06-28 03:35:48,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 189 transitions, 2264 flow [2024-06-28 03:35:48,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:35:48,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:35:48,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-28 03:35:48,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428125 [2024-06-28 03:35:48,131 INFO L175 Difference]: Start difference. First operand has 147 places, 170 transitions, 1791 flow. Second operand 8 states and 137 transitions. [2024-06-28 03:35:48,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 189 transitions, 2264 flow [2024-06-28 03:35:48,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 189 transitions, 2159 flow, removed 43 selfloop flow, removed 3 redundant places. [2024-06-28 03:35:48,230 INFO L231 Difference]: Finished difference. Result has 152 places, 173 transitions, 1796 flow [2024-06-28 03:35:48,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1688, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1796, PETRI_PLACES=152, PETRI_TRANSITIONS=173} [2024-06-28 03:35:48,230 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 111 predicate places. [2024-06-28 03:35:48,230 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 173 transitions, 1796 flow [2024-06-28 03:35:48,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:48,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:48,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:48,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 03:35:48,231 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:35:48,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:48,231 INFO L85 PathProgramCache]: Analyzing trace with hash 148055069, now seen corresponding path program 3 times [2024-06-28 03:35:48,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:48,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133786503] [2024-06-28 03:35:48,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:48,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:48,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:48,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:48,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:48,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133786503] [2024-06-28 03:35:48,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133786503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:48,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:48,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:35:48,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629348679] [2024-06-28 03:35:48,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:48,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:35:48,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:48,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:35:48,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:35:48,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:35:48,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 173 transitions, 1796 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:48,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:48,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:35:48,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:49,384 INFO L124 PetriNetUnfolderBase]: 1705/2777 cut-off events. [2024-06-28 03:35:49,385 INFO L125 PetriNetUnfolderBase]: For 84611/84613 co-relation queries the response was YES. [2024-06-28 03:35:49,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17914 conditions, 2777 events. 1705/2777 cut-off events. For 84611/84613 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 15344 event pairs, 431 based on Foata normal form. 5/2781 useless extension candidates. Maximal degree in co-relation 17846. Up to 2378 conditions per place. [2024-06-28 03:35:49,405 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 143 selfloop transitions, 47 changer transitions 0/195 dead transitions. [2024-06-28 03:35:49,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 195 transitions, 2381 flow [2024-06-28 03:35:49,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:35:49,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:35:49,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-28 03:35:49,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-28 03:35:49,406 INFO L175 Difference]: Start difference. First operand has 152 places, 173 transitions, 1796 flow. Second operand 8 states and 150 transitions. [2024-06-28 03:35:49,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 195 transitions, 2381 flow [2024-06-28 03:35:49,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 195 transitions, 2243 flow, removed 53 selfloop flow, removed 6 redundant places. [2024-06-28 03:35:49,491 INFO L231 Difference]: Finished difference. Result has 154 places, 173 transitions, 1760 flow [2024-06-28 03:35:49,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1658, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1760, PETRI_PLACES=154, PETRI_TRANSITIONS=173} [2024-06-28 03:35:49,491 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 113 predicate places. [2024-06-28 03:35:49,492 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 173 transitions, 1760 flow [2024-06-28 03:35:49,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:49,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:49,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:49,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 03:35:49,492 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:35:49,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:49,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1271146896, now seen corresponding path program 3 times [2024-06-28 03:35:49,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:49,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059612470] [2024-06-28 03:35:49,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:49,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:49,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:50,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:50,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:50,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059612470] [2024-06-28 03:35:50,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059612470] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:50,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:50,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:35:50,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033706271] [2024-06-28 03:35:50,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:50,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:35:50,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:50,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:35:50,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:35:50,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:35:50,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 173 transitions, 1760 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:50,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:50,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:35:50,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:50,665 INFO L124 PetriNetUnfolderBase]: 1750/2843 cut-off events. [2024-06-28 03:35:50,665 INFO L125 PetriNetUnfolderBase]: For 89835/89835 co-relation queries the response was YES. [2024-06-28 03:35:50,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18651 conditions, 2843 events. 1750/2843 cut-off events. For 89835/89835 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 15648 event pairs, 424 based on Foata normal form. 2/2843 useless extension candidates. Maximal degree in co-relation 18582. Up to 2569 conditions per place. [2024-06-28 03:35:50,687 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 164 selfloop transitions, 39 changer transitions 0/208 dead transitions. [2024-06-28 03:35:50,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 208 transitions, 2521 flow [2024-06-28 03:35:50,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:35:50,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:35:50,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-28 03:35:50,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4361111111111111 [2024-06-28 03:35:50,688 INFO L175 Difference]: Start difference. First operand has 154 places, 173 transitions, 1760 flow. Second operand 9 states and 157 transitions. [2024-06-28 03:35:50,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 208 transitions, 2521 flow [2024-06-28 03:35:50,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 208 transitions, 2371 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 03:35:50,797 INFO L231 Difference]: Finished difference. Result has 159 places, 192 transitions, 2034 flow [2024-06-28 03:35:50,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1644, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2034, PETRI_PLACES=159, PETRI_TRANSITIONS=192} [2024-06-28 03:35:50,798 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 118 predicate places. [2024-06-28 03:35:50,798 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 192 transitions, 2034 flow [2024-06-28 03:35:50,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:50,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:50,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:50,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 03:35:50,799 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:35:50,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:50,799 INFO L85 PathProgramCache]: Analyzing trace with hash 72137318, now seen corresponding path program 4 times [2024-06-28 03:35:50,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:50,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268374527] [2024-06-28 03:35:50,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:50,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:50,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:51,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:51,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:51,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268374527] [2024-06-28 03:35:51,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268374527] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:51,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:51,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:35:51,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083989217] [2024-06-28 03:35:51,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:51,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:35:51,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:51,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:35:51,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:35:51,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:35:51,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 192 transitions, 2034 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:51,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:51,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:35:51,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:51,882 INFO L124 PetriNetUnfolderBase]: 1736/2821 cut-off events. [2024-06-28 03:35:51,882 INFO L125 PetriNetUnfolderBase]: For 92402/92402 co-relation queries the response was YES. [2024-06-28 03:35:51,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18547 conditions, 2821 events. 1736/2821 cut-off events. For 92402/92402 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 15513 event pairs, 427 based on Foata normal form. 2/2821 useless extension candidates. Maximal degree in co-relation 18475. Up to 2541 conditions per place. [2024-06-28 03:35:51,906 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 162 selfloop transitions, 40 changer transitions 0/207 dead transitions. [2024-06-28 03:35:51,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 207 transitions, 2486 flow [2024-06-28 03:35:51,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:35:51,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:35:51,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-28 03:35:51,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4607142857142857 [2024-06-28 03:35:51,911 INFO L175 Difference]: Start difference. First operand has 159 places, 192 transitions, 2034 flow. Second operand 7 states and 129 transitions. [2024-06-28 03:35:51,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 207 transitions, 2486 flow [2024-06-28 03:35:52,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 207 transitions, 2391 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-06-28 03:35:52,023 INFO L231 Difference]: Finished difference. Result has 163 places, 192 transitions, 2030 flow [2024-06-28 03:35:52,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1939, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2030, PETRI_PLACES=163, PETRI_TRANSITIONS=192} [2024-06-28 03:35:52,023 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 122 predicate places. [2024-06-28 03:35:52,023 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 192 transitions, 2030 flow [2024-06-28 03:35:52,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:52,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:52,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:52,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 03:35:52,024 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:35:52,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:52,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1080373192, now seen corresponding path program 5 times [2024-06-28 03:35:52,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:52,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077035249] [2024-06-28 03:35:52,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:52,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:52,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:52,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:52,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:52,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077035249] [2024-06-28 03:35:52,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077035249] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:52,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:52,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:35:52,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308930382] [2024-06-28 03:35:52,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:52,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:35:52,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:52,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:35:52,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:35:52,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:35:52,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 192 transitions, 2030 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:52,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:52,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:35:52,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:53,278 INFO L124 PetriNetUnfolderBase]: 1746/2843 cut-off events. [2024-06-28 03:35:53,279 INFO L125 PetriNetUnfolderBase]: For 97019/97019 co-relation queries the response was YES. [2024-06-28 03:35:53,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18755 conditions, 2843 events. 1746/2843 cut-off events. For 97019/97019 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 15766 event pairs, 417 based on Foata normal form. 2/2843 useless extension candidates. Maximal degree in co-relation 18681. Up to 2523 conditions per place. [2024-06-28 03:35:53,302 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 156 selfloop transitions, 48 changer transitions 0/209 dead transitions. [2024-06-28 03:35:53,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 209 transitions, 2533 flow [2024-06-28 03:35:53,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:35:53,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:35:53,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-28 03:35:53,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4607142857142857 [2024-06-28 03:35:53,303 INFO L175 Difference]: Start difference. First operand has 163 places, 192 transitions, 2030 flow. Second operand 7 states and 129 transitions. [2024-06-28 03:35:53,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 209 transitions, 2533 flow [2024-06-28 03:35:53,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 209 transitions, 2344 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-28 03:35:53,409 INFO L231 Difference]: Finished difference. Result has 162 places, 196 transitions, 2024 flow [2024-06-28 03:35:53,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1841, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2024, PETRI_PLACES=162, PETRI_TRANSITIONS=196} [2024-06-28 03:35:53,411 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 121 predicate places. [2024-06-28 03:35:53,411 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 196 transitions, 2024 flow [2024-06-28 03:35:53,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:53,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:53,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:53,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 03:35:53,412 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:35:53,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:53,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1273961062, now seen corresponding path program 6 times [2024-06-28 03:35:53,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:53,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970839704] [2024-06-28 03:35:53,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:53,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:53,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:54,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:54,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:54,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970839704] [2024-06-28 03:35:54,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970839704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:54,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:54,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:35:54,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564217645] [2024-06-28 03:35:54,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:54,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:35:54,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:54,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:35:54,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:35:54,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:35:54,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 196 transitions, 2024 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:54,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:54,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:35:54,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:54,550 INFO L124 PetriNetUnfolderBase]: 1750/2856 cut-off events. [2024-06-28 03:35:54,550 INFO L125 PetriNetUnfolderBase]: For 96754/96756 co-relation queries the response was YES. [2024-06-28 03:35:54,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18750 conditions, 2856 events. 1750/2856 cut-off events. For 96754/96756 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 15849 event pairs, 424 based on Foata normal form. 6/2861 useless extension candidates. Maximal degree in co-relation 18674. Up to 2423 conditions per place. [2024-06-28 03:35:54,573 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 144 selfloop transitions, 63 changer transitions 0/212 dead transitions. [2024-06-28 03:35:54,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 212 transitions, 2602 flow [2024-06-28 03:35:54,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:35:54,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:35:54,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-06-28 03:35:54,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-28 03:35:54,575 INFO L175 Difference]: Start difference. First operand has 162 places, 196 transitions, 2024 flow. Second operand 7 states and 130 transitions. [2024-06-28 03:35:54,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 212 transitions, 2602 flow [2024-06-28 03:35:54,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 212 transitions, 2500 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-28 03:35:54,701 INFO L231 Difference]: Finished difference. Result has 165 places, 199 transitions, 2104 flow [2024-06-28 03:35:54,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1922, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2104, PETRI_PLACES=165, PETRI_TRANSITIONS=199} [2024-06-28 03:35:54,702 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 124 predicate places. [2024-06-28 03:35:54,702 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 199 transitions, 2104 flow [2024-06-28 03:35:54,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:54,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:54,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:54,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 03:35:54,702 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:35:54,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:54,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1631808806, now seen corresponding path program 7 times [2024-06-28 03:35:54,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:54,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437288588] [2024-06-28 03:35:54,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:54,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:54,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:55,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:55,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:55,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437288588] [2024-06-28 03:35:55,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437288588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:55,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:55,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:35:55,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128291250] [2024-06-28 03:35:55,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:55,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:35:55,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:55,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:35:55,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:35:55,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:35:55,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 199 transitions, 2104 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:55,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:55,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:35:55,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:55,917 INFO L124 PetriNetUnfolderBase]: 1740/2840 cut-off events. [2024-06-28 03:35:55,918 INFO L125 PetriNetUnfolderBase]: For 98589/98591 co-relation queries the response was YES. [2024-06-28 03:35:55,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18760 conditions, 2840 events. 1740/2840 cut-off events. For 98589/98591 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 15800 event pairs, 427 based on Foata normal form. 4/2843 useless extension candidates. Maximal degree in co-relation 18683. Up to 2415 conditions per place. [2024-06-28 03:35:55,942 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 139 selfloop transitions, 67 changer transitions 0/211 dead transitions. [2024-06-28 03:35:55,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 211 transitions, 2558 flow [2024-06-28 03:35:55,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:35:55,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:35:55,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-28 03:35:55,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-06-28 03:35:55,944 INFO L175 Difference]: Start difference. First operand has 165 places, 199 transitions, 2104 flow. Second operand 7 states and 128 transitions. [2024-06-28 03:35:55,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 211 transitions, 2558 flow [2024-06-28 03:35:56,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 211 transitions, 2400 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-28 03:35:56,063 INFO L231 Difference]: Finished difference. Result has 168 places, 199 transitions, 2086 flow [2024-06-28 03:35:56,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1946, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2086, PETRI_PLACES=168, PETRI_TRANSITIONS=199} [2024-06-28 03:35:56,064 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 127 predicate places. [2024-06-28 03:35:56,064 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 199 transitions, 2086 flow [2024-06-28 03:35:56,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:56,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:56,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:56,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 03:35:56,065 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:35:56,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:56,065 INFO L85 PathProgramCache]: Analyzing trace with hash -547248466, now seen corresponding path program 2 times [2024-06-28 03:35:56,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:56,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921788717] [2024-06-28 03:35:56,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:56,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:56,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:56,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:56,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:56,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921788717] [2024-06-28 03:35:56,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921788717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:56,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:56,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:35:56,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781177904] [2024-06-28 03:35:56,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:56,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:35:56,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:56,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:35:56,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:35:57,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:35:57,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 199 transitions, 2086 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:57,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:57,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:35:57,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:57,531 INFO L124 PetriNetUnfolderBase]: 1745/2833 cut-off events. [2024-06-28 03:35:57,531 INFO L125 PetriNetUnfolderBase]: For 101519/101523 co-relation queries the response was YES. [2024-06-28 03:35:57,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18860 conditions, 2833 events. 1745/2833 cut-off events. For 101519/101523 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 15555 event pairs, 421 based on Foata normal form. 5/2837 useless extension candidates. Maximal degree in co-relation 18782. Up to 2631 conditions per place. [2024-06-28 03:35:57,554 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 177 selfloop transitions, 30 changer transitions 0/212 dead transitions. [2024-06-28 03:35:57,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 212 transitions, 2592 flow [2024-06-28 03:35:57,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:35:57,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:35:57,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-28 03:35:57,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-28 03:35:57,556 INFO L175 Difference]: Start difference. First operand has 168 places, 199 transitions, 2086 flow. Second operand 8 states and 135 transitions. [2024-06-28 03:35:57,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 212 transitions, 2592 flow [2024-06-28 03:35:57,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 212 transitions, 2396 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 03:35:57,685 INFO L231 Difference]: Finished difference. Result has 168 places, 202 transitions, 2028 flow [2024-06-28 03:35:57,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1890, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2028, PETRI_PLACES=168, PETRI_TRANSITIONS=202} [2024-06-28 03:35:57,686 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 127 predicate places. [2024-06-28 03:35:57,686 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 202 transitions, 2028 flow [2024-06-28 03:35:57,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:57,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:57,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:57,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 03:35:57,687 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:35:57,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:57,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1257786337, now seen corresponding path program 4 times [2024-06-28 03:35:57,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:57,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19740937] [2024-06-28 03:35:57,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:57,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:57,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:58,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:58,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:58,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19740937] [2024-06-28 03:35:58,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19740937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:58,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:58,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:35:58,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454464155] [2024-06-28 03:35:58,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:58,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:35:58,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:58,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:35:58,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:35:58,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:35:58,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 202 transitions, 2028 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:58,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:58,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:35:58,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:58,764 INFO L124 PetriNetUnfolderBase]: 1792/2907 cut-off events. [2024-06-28 03:35:58,765 INFO L125 PetriNetUnfolderBase]: For 112331/112333 co-relation queries the response was YES. [2024-06-28 03:35:58,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19544 conditions, 2907 events. 1792/2907 cut-off events. For 112331/112333 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 16090 event pairs, 431 based on Foata normal form. 5/2911 useless extension candidates. Maximal degree in co-relation 19467. Up to 2298 conditions per place. [2024-06-28 03:35:58,790 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 138 selfloop transitions, 88 changer transitions 0/231 dead transitions. [2024-06-28 03:35:58,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 231 transitions, 3022 flow [2024-06-28 03:35:58,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:35:58,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:35:58,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-28 03:35:58,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.471875 [2024-06-28 03:35:58,792 INFO L175 Difference]: Start difference. First operand has 168 places, 202 transitions, 2028 flow. Second operand 8 states and 151 transitions. [2024-06-28 03:35:58,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 231 transitions, 3022 flow [2024-06-28 03:35:58,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 231 transitions, 2906 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-28 03:35:58,908 INFO L231 Difference]: Finished difference. Result has 171 places, 214 transitions, 2376 flow [2024-06-28 03:35:58,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1912, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2376, PETRI_PLACES=171, PETRI_TRANSITIONS=214} [2024-06-28 03:35:58,908 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 130 predicate places. [2024-06-28 03:35:58,908 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 214 transitions, 2376 flow [2024-06-28 03:35:58,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:58,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:58,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:58,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 03:35:58,909 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:35:58,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:58,909 INFO L85 PathProgramCache]: Analyzing trace with hash -534361456, now seen corresponding path program 3 times [2024-06-28 03:35:58,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:58,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907476905] [2024-06-28 03:35:58,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:58,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:58,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:59,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:59,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:59,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907476905] [2024-06-28 03:35:59,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907476905] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:59,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:59,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:35:59,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460046928] [2024-06-28 03:35:59,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:59,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:35:59,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:59,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:35:59,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:36:00,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:36:00,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 214 transitions, 2376 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:00,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:00,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:36:00,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:00,584 INFO L124 PetriNetUnfolderBase]: 1797/2913 cut-off events. [2024-06-28 03:36:00,584 INFO L125 PetriNetUnfolderBase]: For 119012/119012 co-relation queries the response was YES. [2024-06-28 03:36:00,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20465 conditions, 2913 events. 1797/2913 cut-off events. For 119012/119012 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 16115 event pairs, 424 based on Foata normal form. 1/2913 useless extension candidates. Maximal degree in co-relation 20386. Up to 2730 conditions per place. [2024-06-28 03:36:00,609 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 206 selfloop transitions, 17 changer transitions 0/228 dead transitions. [2024-06-28 03:36:00,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 228 transitions, 2932 flow [2024-06-28 03:36:00,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:36:00,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:36:00,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2024-06-28 03:36:00,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-28 03:36:00,611 INFO L175 Difference]: Start difference. First operand has 171 places, 214 transitions, 2376 flow. Second operand 8 states and 131 transitions. [2024-06-28 03:36:00,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 228 transitions, 2932 flow [2024-06-28 03:36:00,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 228 transitions, 2700 flow, removed 61 selfloop flow, removed 4 redundant places. [2024-06-28 03:36:00,769 INFO L231 Difference]: Finished difference. Result has 175 places, 217 transitions, 2266 flow [2024-06-28 03:36:00,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2148, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2266, PETRI_PLACES=175, PETRI_TRANSITIONS=217} [2024-06-28 03:36:00,769 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 134 predicate places. [2024-06-28 03:36:00,770 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 217 transitions, 2266 flow [2024-06-28 03:36:00,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:00,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:00,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:00,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 03:36:00,770 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)] === [2024-06-28 03:36:00,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:00,771 INFO L85 PathProgramCache]: Analyzing trace with hash 463929972, now seen corresponding path program 4 times [2024-06-28 03:36:00,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:00,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480642517] [2024-06-28 03:36:00,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:00,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:00,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:01,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:01,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:01,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480642517] [2024-06-28 03:36:01,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480642517] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:01,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:01,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:36:01,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550625079] [2024-06-28 03:36:01,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:01,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:36:01,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:01,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:36:01,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:36:01,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:36:01,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 217 transitions, 2266 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:01,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:01,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:36:01,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:02,090 INFO L124 PetriNetUnfolderBase]: 1794/2909 cut-off events. [2024-06-28 03:36:02,090 INFO L125 PetriNetUnfolderBase]: For 118298/118298 co-relation queries the response was YES. [2024-06-28 03:36:02,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19888 conditions, 2909 events. 1794/2909 cut-off events. For 118298/118298 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 16118 event pairs, 424 based on Foata normal form. 1/2909 useless extension candidates. Maximal degree in co-relation 19808. Up to 2720 conditions per place. [2024-06-28 03:36:02,116 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 204 selfloop transitions, 23 changer transitions 0/232 dead transitions. [2024-06-28 03:36:02,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 232 transitions, 2834 flow [2024-06-28 03:36:02,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:36:02,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:36:02,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-28 03:36:02,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40555555555555556 [2024-06-28 03:36:02,120 INFO L175 Difference]: Start difference. First operand has 175 places, 217 transitions, 2266 flow. Second operand 9 states and 146 transitions. [2024-06-28 03:36:02,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 232 transitions, 2834 flow [2024-06-28 03:36:02,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 232 transitions, 2738 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-28 03:36:02,266 INFO L231 Difference]: Finished difference. Result has 178 places, 220 transitions, 2306 flow [2024-06-28 03:36:02,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2170, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2306, PETRI_PLACES=178, PETRI_TRANSITIONS=220} [2024-06-28 03:36:02,267 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 137 predicate places. [2024-06-28 03:36:02,267 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 220 transitions, 2306 flow [2024-06-28 03:36:02,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:02,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:02,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:02,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 03:36:02,268 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:36:02,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:02,268 INFO L85 PathProgramCache]: Analyzing trace with hash -546874079, now seen corresponding path program 5 times [2024-06-28 03:36:02,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:02,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171108454] [2024-06-28 03:36:02,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:02,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:02,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:02,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:02,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:02,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171108454] [2024-06-28 03:36:02,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171108454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:02,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:02,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:36:02,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712243103] [2024-06-28 03:36:02,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:02,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:36:02,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:02,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:36:02,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:36:02,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:36:02,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 220 transitions, 2306 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:02,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:02,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:36:02,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:03,521 INFO L124 PetriNetUnfolderBase]: 1845/2991 cut-off events. [2024-06-28 03:36:03,521 INFO L125 PetriNetUnfolderBase]: For 129153/129155 co-relation queries the response was YES. [2024-06-28 03:36:03,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20879 conditions, 2991 events. 1845/2991 cut-off events. For 129153/129155 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 16677 event pairs, 419 based on Foata normal form. 5/2995 useless extension candidates. Maximal degree in co-relation 20798. Up to 2717 conditions per place. [2024-06-28 03:36:03,548 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 204 selfloop transitions, 36 changer transitions 0/245 dead transitions. [2024-06-28 03:36:03,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 245 transitions, 3089 flow [2024-06-28 03:36:03,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:36:03,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:36:03,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-28 03:36:03,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44375 [2024-06-28 03:36:03,549 INFO L175 Difference]: Start difference. First operand has 178 places, 220 transitions, 2306 flow. Second operand 8 states and 142 transitions. [2024-06-28 03:36:03,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 245 transitions, 3089 flow [2024-06-28 03:36:03,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 245 transitions, 2975 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-28 03:36:03,721 INFO L231 Difference]: Finished difference. Result has 180 places, 228 transitions, 2449 flow [2024-06-28 03:36:03,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2192, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2449, PETRI_PLACES=180, PETRI_TRANSITIONS=228} [2024-06-28 03:36:03,722 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 139 predicate places. [2024-06-28 03:36:03,722 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 228 transitions, 2449 flow [2024-06-28 03:36:03,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:03,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:03,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:03,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 03:36:03,723 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:36:03,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:03,723 INFO L85 PathProgramCache]: Analyzing trace with hash -547248869, now seen corresponding path program 6 times [2024-06-28 03:36:03,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:03,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484578810] [2024-06-28 03:36:03,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:03,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:03,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:04,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:04,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:04,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484578810] [2024-06-28 03:36:04,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484578810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:04,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:04,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:36:04,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720187895] [2024-06-28 03:36:04,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:04,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:36:04,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:04,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:36:04,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:36:04,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:36:04,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 228 transitions, 2449 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:04,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:04,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:36:04,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:04,966 INFO L124 PetriNetUnfolderBase]: 1840/2986 cut-off events. [2024-06-28 03:36:04,966 INFO L125 PetriNetUnfolderBase]: For 132534/132536 co-relation queries the response was YES. [2024-06-28 03:36:04,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20950 conditions, 2986 events. 1840/2986 cut-off events. For 132534/132536 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 16676 event pairs, 432 based on Foata normal form. 5/2990 useless extension candidates. Maximal degree in co-relation 20867. Up to 2342 conditions per place. [2024-06-28 03:36:04,992 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 149 selfloop transitions, 91 changer transitions 0/245 dead transitions. [2024-06-28 03:36:04,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 245 transitions, 3249 flow [2024-06-28 03:36:04,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:36:04,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:36:04,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-28 03:36:04,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.471875 [2024-06-28 03:36:04,994 INFO L175 Difference]: Start difference. First operand has 180 places, 228 transitions, 2449 flow. Second operand 8 states and 151 transitions. [2024-06-28 03:36:04,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 245 transitions, 3249 flow [2024-06-28 03:36:05,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 245 transitions, 2976 flow, removed 68 selfloop flow, removed 6 redundant places. [2024-06-28 03:36:05,170 INFO L231 Difference]: Finished difference. Result has 182 places, 228 transitions, 2366 flow [2024-06-28 03:36:05,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2176, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2366, PETRI_PLACES=182, PETRI_TRANSITIONS=228} [2024-06-28 03:36:05,170 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 141 predicate places. [2024-06-28 03:36:05,170 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 228 transitions, 2366 flow [2024-06-28 03:36:05,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:05,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:05,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:05,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 03:36:05,171 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:36:05,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:05,171 INFO L85 PathProgramCache]: Analyzing trace with hash -894502546, now seen corresponding path program 1 times [2024-06-28 03:36:05,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:05,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368809675] [2024-06-28 03:36:05,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:05,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:05,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:05,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:05,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:05,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368809675] [2024-06-28 03:36:05,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368809675] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:05,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:05,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:36:05,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879583732] [2024-06-28 03:36:05,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:05,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:36:05,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:05,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:36:05,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:36:05,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:36:05,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 228 transitions, 2366 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:05,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:05,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:36:05,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:06,347 INFO L124 PetriNetUnfolderBase]: 1845/2998 cut-off events. [2024-06-28 03:36:06,347 INFO L125 PetriNetUnfolderBase]: For 136233/136233 co-relation queries the response was YES. [2024-06-28 03:36:06,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20901 conditions, 2998 events. 1845/2998 cut-off events. For 136233/136233 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 16770 event pairs, 421 based on Foata normal form. 1/2998 useless extension candidates. Maximal degree in co-relation 20819. Up to 2788 conditions per place. [2024-06-28 03:36:06,374 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 226 selfloop transitions, 20 changer transitions 0/251 dead transitions. [2024-06-28 03:36:06,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 251 transitions, 2992 flow [2024-06-28 03:36:06,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:36:06,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:36:06,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-28 03:36:06,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-06-28 03:36:06,375 INFO L175 Difference]: Start difference. First operand has 182 places, 228 transitions, 2366 flow. Second operand 8 states and 134 transitions. [2024-06-28 03:36:06,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 251 transitions, 2992 flow [2024-06-28 03:36:06,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 251 transitions, 2749 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 03:36:06,569 INFO L231 Difference]: Finished difference. Result has 184 places, 237 transitions, 2280 flow [2024-06-28 03:36:06,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2131, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2280, PETRI_PLACES=184, PETRI_TRANSITIONS=237} [2024-06-28 03:36:06,570 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 143 predicate places. [2024-06-28 03:36:06,570 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 237 transitions, 2280 flow [2024-06-28 03:36:06,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:06,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:06,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:06,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 03:36:06,570 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:36:06,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:06,571 INFO L85 PathProgramCache]: Analyzing trace with hash -541319344, now seen corresponding path program 2 times [2024-06-28 03:36:06,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:06,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638687510] [2024-06-28 03:36:06,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:06,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:06,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:07,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:07,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:07,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638687510] [2024-06-28 03:36:07,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638687510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:07,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:07,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:36:07,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733877194] [2024-06-28 03:36:07,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:07,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:36:07,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:07,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:36:07,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:36:07,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:36:07,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 237 transitions, 2280 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:07,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:07,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:36:07,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:07,933 INFO L124 PetriNetUnfolderBase]: 1873/3039 cut-off events. [2024-06-28 03:36:07,933 INFO L125 PetriNetUnfolderBase]: For 142836/142838 co-relation queries the response was YES. [2024-06-28 03:36:07,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21133 conditions, 3039 events. 1873/3039 cut-off events. For 142836/142838 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 16982 event pairs, 418 based on Foata normal form. 4/3042 useless extension candidates. Maximal degree in co-relation 21050. Up to 2772 conditions per place. [2024-06-28 03:36:07,960 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 212 selfloop transitions, 48 changer transitions 0/265 dead transitions. [2024-06-28 03:36:07,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 265 transitions, 3104 flow [2024-06-28 03:36:07,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:36:07,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:36:07,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-28 03:36:07,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4305555555555556 [2024-06-28 03:36:07,961 INFO L175 Difference]: Start difference. First operand has 184 places, 237 transitions, 2280 flow. Second operand 9 states and 155 transitions. [2024-06-28 03:36:07,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 265 transitions, 3104 flow [2024-06-28 03:36:08,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 265 transitions, 3051 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-06-28 03:36:08,176 INFO L231 Difference]: Finished difference. Result has 191 places, 248 transitions, 2499 flow [2024-06-28 03:36:08,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2227, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2499, PETRI_PLACES=191, PETRI_TRANSITIONS=248} [2024-06-28 03:36:08,177 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 150 predicate places. [2024-06-28 03:36:08,177 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 248 transitions, 2499 flow [2024-06-28 03:36:08,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:08,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:08,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:08,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 03:36:08,177 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:36:08,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:08,178 INFO L85 PathProgramCache]: Analyzing trace with hash -541528594, now seen corresponding path program 3 times [2024-06-28 03:36:08,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:08,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360799727] [2024-06-28 03:36:08,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:08,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:08,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:08,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:08,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:08,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360799727] [2024-06-28 03:36:08,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360799727] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:08,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:08,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:36:08,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462186891] [2024-06-28 03:36:08,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:08,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:36:08,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:08,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:36:08,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:36:09,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:36:09,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 248 transitions, 2499 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:09,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:09,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:36:09,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:09,545 INFO L124 PetriNetUnfolderBase]: 1870/3037 cut-off events. [2024-06-28 03:36:09,546 INFO L125 PetriNetUnfolderBase]: For 148734/148736 co-relation queries the response was YES. [2024-06-28 03:36:09,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21835 conditions, 3037 events. 1870/3037 cut-off events. For 148734/148736 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 17002 event pairs, 418 based on Foata normal form. 3/3039 useless extension candidates. Maximal degree in co-relation 21749. Up to 2808 conditions per place. [2024-06-28 03:36:09,574 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 234 selfloop transitions, 31 changer transitions 0/270 dead transitions. [2024-06-28 03:36:09,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 270 transitions, 3193 flow [2024-06-28 03:36:09,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:36:09,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:36:09,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-28 03:36:09,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-28 03:36:09,575 INFO L175 Difference]: Start difference. First operand has 191 places, 248 transitions, 2499 flow. Second operand 8 states and 135 transitions. [2024-06-28 03:36:09,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 270 transitions, 3193 flow [2024-06-28 03:36:09,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 270 transitions, 3077 flow, removed 34 selfloop flow, removed 4 redundant places. [2024-06-28 03:36:09,790 INFO L231 Difference]: Finished difference. Result has 197 places, 258 transitions, 2604 flow [2024-06-28 03:36:09,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2392, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2604, PETRI_PLACES=197, PETRI_TRANSITIONS=258} [2024-06-28 03:36:09,791 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 156 predicate places. [2024-06-28 03:36:09,791 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 258 transitions, 2604 flow [2024-06-28 03:36:09,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:09,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:09,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:09,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 03:36:09,792 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:36:09,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:09,792 INFO L85 PathProgramCache]: Analyzing trace with hash -483527854, now seen corresponding path program 1 times [2024-06-28 03:36:09,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:09,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281787405] [2024-06-28 03:36:09,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:09,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:09,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:10,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:10,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:10,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281787405] [2024-06-28 03:36:10,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281787405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:10,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:10,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:36:10,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868496184] [2024-06-28 03:36:10,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:10,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:36:10,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:10,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:36:10,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:36:10,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:36:10,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 258 transitions, 2604 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:10,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:10,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:36:10,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:11,163 INFO L124 PetriNetUnfolderBase]: 1880/3049 cut-off events. [2024-06-28 03:36:11,164 INFO L125 PetriNetUnfolderBase]: For 156024/156024 co-relation queries the response was YES. [2024-06-28 03:36:11,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22209 conditions, 3049 events. 1880/3049 cut-off events. For 156024/156024 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 17119 event pairs, 420 based on Foata normal form. 2/3049 useless extension candidates. Maximal degree in co-relation 22119. Up to 2663 conditions per place. [2024-06-28 03:36:11,192 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 234 selfloop transitions, 46 changer transitions 0/285 dead transitions. [2024-06-28 03:36:11,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 285 transitions, 3312 flow [2024-06-28 03:36:11,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:36:11,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:36:11,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-28 03:36:11,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.471875 [2024-06-28 03:36:11,193 INFO L175 Difference]: Start difference. First operand has 197 places, 258 transitions, 2604 flow. Second operand 8 states and 151 transitions. [2024-06-28 03:36:11,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 285 transitions, 3312 flow [2024-06-28 03:36:11,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 285 transitions, 3236 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-28 03:36:11,389 INFO L231 Difference]: Finished difference. Result has 202 places, 262 transitions, 2705 flow [2024-06-28 03:36:11,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2528, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2705, PETRI_PLACES=202, PETRI_TRANSITIONS=262} [2024-06-28 03:36:11,390 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 161 predicate places. [2024-06-28 03:36:11,390 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 262 transitions, 2705 flow [2024-06-28 03:36:11,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:11,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:11,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:11,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 03:36:11,390 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:36:11,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:11,391 INFO L85 PathProgramCache]: Analyzing trace with hash -312705268, now seen corresponding path program 1 times [2024-06-28 03:36:11,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:11,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678160462] [2024-06-28 03:36:11,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:11,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:11,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:12,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:12,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:12,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678160462] [2024-06-28 03:36:12,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678160462] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:12,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:12,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:36:12,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826989290] [2024-06-28 03:36:12,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:12,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:36:12,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:12,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:36:12,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:36:12,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:36:12,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 262 transitions, 2705 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:12,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:12,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:36:12,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:12,769 INFO L124 PetriNetUnfolderBase]: 1991/3228 cut-off events. [2024-06-28 03:36:12,770 INFO L125 PetriNetUnfolderBase]: For 167432/167434 co-relation queries the response was YES. [2024-06-28 03:36:12,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24045 conditions, 3228 events. 1991/3228 cut-off events. For 167432/167434 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 18091 event pairs, 433 based on Foata normal form. 6/3233 useless extension candidates. Maximal degree in co-relation 23953. Up to 2835 conditions per place. [2024-06-28 03:36:12,800 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 250 selfloop transitions, 51 changer transitions 0/306 dead transitions. [2024-06-28 03:36:12,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 306 transitions, 3740 flow [2024-06-28 03:36:12,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:36:12,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:36:12,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-28 03:36:12,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44722222222222224 [2024-06-28 03:36:12,801 INFO L175 Difference]: Start difference. First operand has 202 places, 262 transitions, 2705 flow. Second operand 9 states and 161 transitions. [2024-06-28 03:36:12,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 306 transitions, 3740 flow [2024-06-28 03:36:13,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 306 transitions, 3532 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-28 03:36:13,076 INFO L231 Difference]: Finished difference. Result has 208 places, 285 transitions, 3022 flow [2024-06-28 03:36:13,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2533, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3022, PETRI_PLACES=208, PETRI_TRANSITIONS=285} [2024-06-28 03:36:13,077 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 167 predicate places. [2024-06-28 03:36:13,077 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 285 transitions, 3022 flow [2024-06-28 03:36:13,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:13,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:13,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:13,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 03:36:13,078 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:36:13,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:13,078 INFO L85 PathProgramCache]: Analyzing trace with hash -929914620, now seen corresponding path program 2 times [2024-06-28 03:36:13,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:13,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120414567] [2024-06-28 03:36:13,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:13,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:13,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:13,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:13,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:13,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120414567] [2024-06-28 03:36:13,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120414567] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:13,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:13,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:36:13,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944232077] [2024-06-28 03:36:13,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:13,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:36:13,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:13,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:36:13,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:36:13,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:36:13,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 285 transitions, 3022 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:13,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:13,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:36:13,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:14,571 INFO L124 PetriNetUnfolderBase]: 2086/3366 cut-off events. [2024-06-28 03:36:14,571 INFO L125 PetriNetUnfolderBase]: For 172450/172452 co-relation queries the response was YES. [2024-06-28 03:36:14,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25457 conditions, 3366 events. 2086/3366 cut-off events. For 172450/172452 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 18863 event pairs, 422 based on Foata normal form. 6/3371 useless extension candidates. Maximal degree in co-relation 25360. Up to 2919 conditions per place. [2024-06-28 03:36:14,608 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 258 selfloop transitions, 72 changer transitions 0/335 dead transitions. [2024-06-28 03:36:14,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 335 transitions, 4175 flow [2024-06-28 03:36:14,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:36:14,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:36:14,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-28 03:36:14,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-28 03:36:14,609 INFO L175 Difference]: Start difference. First operand has 208 places, 285 transitions, 3022 flow. Second operand 9 states and 168 transitions. [2024-06-28 03:36:14,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 335 transitions, 4175 flow [2024-06-28 03:36:14,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 335 transitions, 4033 flow, removed 42 selfloop flow, removed 3 redundant places. [2024-06-28 03:36:14,925 INFO L231 Difference]: Finished difference. Result has 218 places, 310 transitions, 3532 flow [2024-06-28 03:36:14,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2936, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3532, PETRI_PLACES=218, PETRI_TRANSITIONS=310} [2024-06-28 03:36:14,926 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 177 predicate places. [2024-06-28 03:36:14,926 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 310 transitions, 3532 flow [2024-06-28 03:36:14,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:14,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:14,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:14,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 03:36:14,926 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)] === [2024-06-28 03:36:14,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:14,927 INFO L85 PathProgramCache]: Analyzing trace with hash -82548694, now seen corresponding path program 3 times [2024-06-28 03:36:14,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:14,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541766254] [2024-06-28 03:36:14,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:14,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:14,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:15,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:15,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:15,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541766254] [2024-06-28 03:36:15,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541766254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:15,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:15,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:36:15,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855137848] [2024-06-28 03:36:15,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:15,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:36:15,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:15,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:36:15,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:36:15,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:36:15,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 310 transitions, 3532 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:15,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:15,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:36:15,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:16,215 INFO L124 PetriNetUnfolderBase]: 2122/3426 cut-off events. [2024-06-28 03:36:16,216 INFO L125 PetriNetUnfolderBase]: For 184401/184403 co-relation queries the response was YES. [2024-06-28 03:36:16,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26483 conditions, 3426 events. 2122/3426 cut-off events. For 184401/184403 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 19259 event pairs, 441 based on Foata normal form. 6/3431 useless extension candidates. Maximal degree in co-relation 26381. Up to 2740 conditions per place. [2024-06-28 03:36:16,248 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 236 selfloop transitions, 97 changer transitions 0/338 dead transitions. [2024-06-28 03:36:16,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 338 transitions, 4654 flow [2024-06-28 03:36:16,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:36:16,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:36:16,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-28 03:36:16,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.471875 [2024-06-28 03:36:16,250 INFO L175 Difference]: Start difference. First operand has 218 places, 310 transitions, 3532 flow. Second operand 8 states and 151 transitions. [2024-06-28 03:36:16,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 338 transitions, 4654 flow [2024-06-28 03:36:16,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 338 transitions, 4506 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-28 03:36:16,568 INFO L231 Difference]: Finished difference. Result has 221 places, 317 transitions, 3739 flow [2024-06-28 03:36:16,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3384, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3739, PETRI_PLACES=221, PETRI_TRANSITIONS=317} [2024-06-28 03:36:16,568 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 180 predicate places. [2024-06-28 03:36:16,569 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 317 transitions, 3739 flow [2024-06-28 03:36:16,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:16,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:16,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:16,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 03:36:16,570 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)] === [2024-06-28 03:36:16,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:16,570 INFO L85 PathProgramCache]: Analyzing trace with hash -306269668, now seen corresponding path program 4 times [2024-06-28 03:36:16,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:16,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418512072] [2024-06-28 03:36:16,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:16,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:16,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:17,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:17,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:17,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418512072] [2024-06-28 03:36:17,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418512072] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:17,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:17,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:36:17,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376970086] [2024-06-28 03:36:17,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:17,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:36:17,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:17,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:36:17,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:36:17,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:36:17,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 317 transitions, 3739 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:17,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:17,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:36:17,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:17,945 INFO L124 PetriNetUnfolderBase]: 2271/3654 cut-off events. [2024-06-28 03:36:17,946 INFO L125 PetriNetUnfolderBase]: For 193480/193482 co-relation queries the response was YES. [2024-06-28 03:36:17,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28141 conditions, 3654 events. 2271/3654 cut-off events. For 193480/193482 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 20810 event pairs, 439 based on Foata normal form. 6/3659 useless extension candidates. Maximal degree in co-relation 28038. Up to 3003 conditions per place. [2024-06-28 03:36:17,983 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 272 selfloop transitions, 96 changer transitions 0/373 dead transitions. [2024-06-28 03:36:17,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 373 transitions, 5127 flow [2024-06-28 03:36:17,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:36:17,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:36:17,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-28 03:36:17,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-28 03:36:17,984 INFO L175 Difference]: Start difference. First operand has 221 places, 317 transitions, 3739 flow. Second operand 9 states and 162 transitions. [2024-06-28 03:36:17,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 373 transitions, 5127 flow [2024-06-28 03:36:18,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 373 transitions, 4864 flow, removed 62 selfloop flow, removed 4 redundant places. [2024-06-28 03:36:18,370 INFO L231 Difference]: Finished difference. Result has 228 places, 348 transitions, 4190 flow [2024-06-28 03:36:18,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3560, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4190, PETRI_PLACES=228, PETRI_TRANSITIONS=348} [2024-06-28 03:36:18,370 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 187 predicate places. [2024-06-28 03:36:18,371 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 348 transitions, 4190 flow [2024-06-28 03:36:18,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:18,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:18,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:18,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 03:36:18,371 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)] === [2024-06-28 03:36:18,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:18,372 INFO L85 PathProgramCache]: Analyzing trace with hash -601857706, now seen corresponding path program 1 times [2024-06-28 03:36:18,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:18,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11203298] [2024-06-28 03:36:18,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:18,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:18,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:18,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:18,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:18,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11203298] [2024-06-28 03:36:18,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11203298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:18,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:18,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:36:18,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053753424] [2024-06-28 03:36:18,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:18,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:36:18,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:18,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:36:18,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:36:19,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:36:19,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 348 transitions, 4190 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:19,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:19,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:36:19,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:19,897 INFO L124 PetriNetUnfolderBase]: 2307/3716 cut-off events. [2024-06-28 03:36:19,899 INFO L125 PetriNetUnfolderBase]: For 208487/208493 co-relation queries the response was YES. [2024-06-28 03:36:19,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28612 conditions, 3716 events. 2307/3716 cut-off events. For 208487/208493 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 21186 event pairs, 360 based on Foata normal form. 16/3731 useless extension candidates. Maximal degree in co-relation 28506. Up to 3189 conditions per place. [2024-06-28 03:36:19,933 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 314 selfloop transitions, 63 changer transitions 0/382 dead transitions. [2024-06-28 03:36:19,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 382 transitions, 5152 flow [2024-06-28 03:36:19,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:36:19,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:36:19,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-28 03:36:19,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48125 [2024-06-28 03:36:19,935 INFO L175 Difference]: Start difference. First operand has 228 places, 348 transitions, 4190 flow. Second operand 8 states and 154 transitions. [2024-06-28 03:36:19,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 382 transitions, 5152 flow [2024-06-28 03:36:20,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 382 transitions, 4978 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-28 03:36:20,311 INFO L231 Difference]: Finished difference. Result has 232 places, 352 transitions, 4236 flow [2024-06-28 03:36:20,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4016, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4236, PETRI_PLACES=232, PETRI_TRANSITIONS=352} [2024-06-28 03:36:20,311 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 191 predicate places. [2024-06-28 03:36:20,312 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 352 transitions, 4236 flow [2024-06-28 03:36:20,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:20,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:20,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:20,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 03:36:20,312 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)] === [2024-06-28 03:36:20,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:20,313 INFO L85 PathProgramCache]: Analyzing trace with hash -593286826, now seen corresponding path program 2 times [2024-06-28 03:36:20,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:20,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885532731] [2024-06-28 03:36:20,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:20,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:20,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:20,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:20,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:20,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885532731] [2024-06-28 03:36:20,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885532731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:20,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:20,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:36:20,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101388379] [2024-06-28 03:36:20,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:20,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:36:20,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:20,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:36:20,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:36:21,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:36:21,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 352 transitions, 4236 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:21,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:21,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:36:21,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:21,801 INFO L124 PetriNetUnfolderBase]: 2351/3793 cut-off events. [2024-06-28 03:36:21,802 INFO L125 PetriNetUnfolderBase]: For 220322/220328 co-relation queries the response was YES. [2024-06-28 03:36:21,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29367 conditions, 3793 events. 2351/3793 cut-off events. For 220322/220328 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 21779 event pairs, 460 based on Foata normal form. 18/3810 useless extension candidates. Maximal degree in co-relation 29259. Up to 3284 conditions per place. [2024-06-28 03:36:21,917 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 310 selfloop transitions, 67 changer transitions 0/382 dead transitions. [2024-06-28 03:36:21,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 382 transitions, 5198 flow [2024-06-28 03:36:21,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:36:21,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:36:21,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-28 03:36:21,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.478125 [2024-06-28 03:36:21,919 INFO L175 Difference]: Start difference. First operand has 232 places, 352 transitions, 4236 flow. Second operand 8 states and 153 transitions. [2024-06-28 03:36:21,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 382 transitions, 5198 flow [2024-06-28 03:36:22,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 382 transitions, 5030 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-28 03:36:22,448 INFO L231 Difference]: Finished difference. Result has 235 places, 354 transitions, 4270 flow [2024-06-28 03:36:22,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4068, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4270, PETRI_PLACES=235, PETRI_TRANSITIONS=354} [2024-06-28 03:36:22,449 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 194 predicate places. [2024-06-28 03:36:22,449 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 354 transitions, 4270 flow [2024-06-28 03:36:22,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:22,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:22,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:22,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 03:36:22,449 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)] === [2024-06-28 03:36:22,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:22,450 INFO L85 PathProgramCache]: Analyzing trace with hash -306399496, now seen corresponding path program 3 times [2024-06-28 03:36:22,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:22,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874283900] [2024-06-28 03:36:22,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:22,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:22,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:23,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:23,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:23,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874283900] [2024-06-28 03:36:23,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874283900] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:23,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:23,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:36:23,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37822018] [2024-06-28 03:36:23,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:23,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:36:23,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:23,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:36:23,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:36:23,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:36:23,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 354 transitions, 4270 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:23,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:23,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:36:23,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:24,130 INFO L124 PetriNetUnfolderBase]: 2395/3885 cut-off events. [2024-06-28 03:36:24,130 INFO L125 PetriNetUnfolderBase]: For 229460/229462 co-relation queries the response was YES. [2024-06-28 03:36:24,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29984 conditions, 3885 events. 2395/3885 cut-off events. For 229460/229462 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 22576 event pairs, 441 based on Foata normal form. 14/3898 useless extension candidates. Maximal degree in co-relation 29875. Up to 3216 conditions per place. [2024-06-28 03:36:24,175 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 286 selfloop transitions, 88 changer transitions 0/379 dead transitions. [2024-06-28 03:36:24,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 379 transitions, 5220 flow [2024-06-28 03:36:24,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:36:24,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:36:24,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-28 03:36:24,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.465625 [2024-06-28 03:36:24,177 INFO L175 Difference]: Start difference. First operand has 235 places, 354 transitions, 4270 flow. Second operand 8 states and 149 transitions. [2024-06-28 03:36:24,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 379 transitions, 5220 flow [2024-06-28 03:36:24,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 379 transitions, 5052 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-28 03:36:24,637 INFO L231 Difference]: Finished difference. Result has 237 places, 356 transitions, 4350 flow [2024-06-28 03:36:24,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4102, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4350, PETRI_PLACES=237, PETRI_TRANSITIONS=356} [2024-06-28 03:36:24,637 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 196 predicate places. [2024-06-28 03:36:24,637 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 356 transitions, 4350 flow [2024-06-28 03:36:24,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:24,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:24,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:24,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 03:36:24,638 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)] === [2024-06-28 03:36:24,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:24,640 INFO L85 PathProgramCache]: Analyzing trace with hash -593275914, now seen corresponding path program 1 times [2024-06-28 03:36:24,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:24,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078439001] [2024-06-28 03:36:24,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:24,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:24,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:25,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:25,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:25,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078439001] [2024-06-28 03:36:25,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078439001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:25,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:25,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:36:25,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749835028] [2024-06-28 03:36:25,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:25,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:36:25,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:25,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:36:25,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:36:25,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:36:25,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 356 transitions, 4350 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:25,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:25,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:36:25,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:26,518 INFO L124 PetriNetUnfolderBase]: 2405/3879 cut-off events. [2024-06-28 03:36:26,518 INFO L125 PetriNetUnfolderBase]: For 220841/220847 co-relation queries the response was YES. [2024-06-28 03:36:26,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30347 conditions, 3879 events. 2405/3879 cut-off events. For 220841/220847 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 22342 event pairs, 468 based on Foata normal form. 8/3886 useless extension candidates. Maximal degree in co-relation 30237. Up to 3406 conditions per place. [2024-06-28 03:36:26,561 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 313 selfloop transitions, 75 changer transitions 0/393 dead transitions. [2024-06-28 03:36:26,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 393 transitions, 5434 flow [2024-06-28 03:36:26,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:36:26,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:36:26,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-28 03:36:26,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-06-28 03:36:26,563 INFO L175 Difference]: Start difference. First operand has 237 places, 356 transitions, 4350 flow. Second operand 9 states and 164 transitions. [2024-06-28 03:36:26,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 393 transitions, 5434 flow [2024-06-28 03:36:27,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 393 transitions, 5212 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-28 03:36:27,027 INFO L231 Difference]: Finished difference. Result has 242 places, 370 transitions, 4554 flow [2024-06-28 03:36:27,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4136, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4554, PETRI_PLACES=242, PETRI_TRANSITIONS=370} [2024-06-28 03:36:27,028 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 201 predicate places. [2024-06-28 03:36:27,028 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 370 transitions, 4554 flow [2024-06-28 03:36:27,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:27,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:27,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:27,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 03:36:27,028 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:36:27,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:27,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1893087346, now seen corresponding path program 2 times [2024-06-28 03:36:27,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:27,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021158993] [2024-06-28 03:36:27,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:27,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:27,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:28,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:28,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:28,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021158993] [2024-06-28 03:36:28,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021158993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:28,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:28,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:36:28,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988223815] [2024-06-28 03:36:28,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:28,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:36:28,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:28,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:36:28,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:36:28,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:36:28,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 370 transitions, 4554 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:28,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:28,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:36:28,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:28,929 INFO L124 PetriNetUnfolderBase]: 2415/3917 cut-off events. [2024-06-28 03:36:28,930 INFO L125 PetriNetUnfolderBase]: For 229131/229133 co-relation queries the response was YES. [2024-06-28 03:36:28,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30924 conditions, 3917 events. 2415/3917 cut-off events. For 229131/229133 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 22805 event pairs, 433 based on Foata normal form. 4/3920 useless extension candidates. Maximal degree in co-relation 30811. Up to 3238 conditions per place. [2024-06-28 03:36:28,975 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 328 selfloop transitions, 114 changer transitions 0/447 dead transitions. [2024-06-28 03:36:28,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 447 transitions, 6423 flow [2024-06-28 03:36:28,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:36:28,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:36:28,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-28 03:36:28,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-28 03:36:28,977 INFO L175 Difference]: Start difference. First operand has 242 places, 370 transitions, 4554 flow. Second operand 9 states and 162 transitions. [2024-06-28 03:36:28,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 447 transitions, 6423 flow [2024-06-28 03:36:29,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 447 transitions, 6183 flow, removed 62 selfloop flow, removed 5 redundant places. [2024-06-28 03:36:29,429 INFO L231 Difference]: Finished difference. Result has 249 places, 422 transitions, 5464 flow [2024-06-28 03:36:29,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4322, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5464, PETRI_PLACES=249, PETRI_TRANSITIONS=422} [2024-06-28 03:36:29,430 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 208 predicate places. [2024-06-28 03:36:29,430 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 422 transitions, 5464 flow [2024-06-28 03:36:29,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:29,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:29,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:29,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 03:36:29,431 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:36:29,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:29,431 INFO L85 PathProgramCache]: Analyzing trace with hash -306042624, now seen corresponding path program 3 times [2024-06-28 03:36:29,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:29,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416264041] [2024-06-28 03:36:29,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:29,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:29,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:30,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:30,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:30,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416264041] [2024-06-28 03:36:30,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416264041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:30,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:30,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:36:30,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430082351] [2024-06-28 03:36:30,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:30,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:36:30,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:30,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:36:30,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:36:30,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:36:30,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 422 transitions, 5464 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:30,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:30,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:36:30,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:31,204 INFO L124 PetriNetUnfolderBase]: 2427/3914 cut-off events. [2024-06-28 03:36:31,204 INFO L125 PetriNetUnfolderBase]: For 237230/237232 co-relation queries the response was YES. [2024-06-28 03:36:31,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31876 conditions, 3914 events. 2427/3914 cut-off events. For 237230/237232 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 22562 event pairs, 433 based on Foata normal form. 4/3917 useless extension candidates. Maximal degree in co-relation 31759. Up to 3253 conditions per place. [2024-06-28 03:36:31,250 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 331 selfloop transitions, 117 changer transitions 0/453 dead transitions. [2024-06-28 03:36:31,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 453 transitions, 6778 flow [2024-06-28 03:36:31,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:36:31,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:36:31,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-28 03:36:31,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44722222222222224 [2024-06-28 03:36:31,252 INFO L175 Difference]: Start difference. First operand has 249 places, 422 transitions, 5464 flow. Second operand 9 states and 161 transitions. [2024-06-28 03:36:31,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 453 transitions, 6778 flow [2024-06-28 03:36:31,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 453 transitions, 6574 flow, removed 77 selfloop flow, removed 3 redundant places. [2024-06-28 03:36:31,728 INFO L231 Difference]: Finished difference. Result has 256 places, 435 transitions, 5807 flow [2024-06-28 03:36:31,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5284, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5807, PETRI_PLACES=256, PETRI_TRANSITIONS=435} [2024-06-28 03:36:31,729 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 215 predicate places. [2024-06-28 03:36:31,729 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 435 transitions, 5807 flow [2024-06-28 03:36:31,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:31,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:31,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:31,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 03:36:31,729 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:36:31,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:31,730 INFO L85 PathProgramCache]: Analyzing trace with hash -2069567336, now seen corresponding path program 4 times [2024-06-28 03:36:31,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:31,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712059943] [2024-06-28 03:36:31,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:31,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:31,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:32,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:32,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:32,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712059943] [2024-06-28 03:36:32,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712059943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:32,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:32,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:36:32,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111450235] [2024-06-28 03:36:32,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:32,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:36:32,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:32,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:36:32,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:36:32,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:36:32,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 435 transitions, 5807 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:32,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:32,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:36:32,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:33,447 INFO L124 PetriNetUnfolderBase]: 2455/3956 cut-off events. [2024-06-28 03:36:33,447 INFO L125 PetriNetUnfolderBase]: For 248192/248194 co-relation queries the response was YES. [2024-06-28 03:36:33,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33016 conditions, 3956 events. 2455/3956 cut-off events. For 248192/248194 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 22799 event pairs, 432 based on Foata normal form. 4/3959 useless extension candidates. Maximal degree in co-relation 32896. Up to 3213 conditions per place. [2024-06-28 03:36:33,494 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 335 selfloop transitions, 122 changer transitions 0/462 dead transitions. [2024-06-28 03:36:33,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 462 transitions, 7227 flow [2024-06-28 03:36:33,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:36:33,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:36:33,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-28 03:36:33,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4527777777777778 [2024-06-28 03:36:33,496 INFO L175 Difference]: Start difference. First operand has 256 places, 435 transitions, 5807 flow. Second operand 9 states and 163 transitions. [2024-06-28 03:36:33,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 462 transitions, 7227 flow [2024-06-28 03:36:34,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 462 transitions, 7002 flow, removed 51 selfloop flow, removed 4 redundant places. [2024-06-28 03:36:34,057 INFO L231 Difference]: Finished difference. Result has 262 places, 443 transitions, 6086 flow [2024-06-28 03:36:34,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5582, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6086, PETRI_PLACES=262, PETRI_TRANSITIONS=443} [2024-06-28 03:36:34,058 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 221 predicate places. [2024-06-28 03:36:34,058 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 443 transitions, 6086 flow [2024-06-28 03:36:34,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:34,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:34,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:34,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 03:36:34,059 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)] === [2024-06-28 03:36:34,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:34,059 INFO L85 PathProgramCache]: Analyzing trace with hash -306030100, now seen corresponding path program 1 times [2024-06-28 03:36:34,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:34,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129058853] [2024-06-28 03:36:34,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:34,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:34,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:35,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:35,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:35,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129058853] [2024-06-28 03:36:35,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129058853] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:35,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:35,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:36:35,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922441768] [2024-06-28 03:36:35,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:35,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:36:35,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:35,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:36:35,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:36:35,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:36:35,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 443 transitions, 6086 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:35,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:35,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:36:35,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:36,055 INFO L124 PetriNetUnfolderBase]: 2468/3984 cut-off events. [2024-06-28 03:36:36,056 INFO L125 PetriNetUnfolderBase]: For 261013/261021 co-relation queries the response was YES. [2024-06-28 03:36:36,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33832 conditions, 3984 events. 2468/3984 cut-off events. For 261013/261021 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 23100 event pairs, 421 based on Foata normal form. 10/3993 useless extension candidates. Maximal degree in co-relation 33710. Up to 3668 conditions per place. [2024-06-28 03:36:36,105 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 436 selfloop transitions, 27 changer transitions 0/468 dead transitions. [2024-06-28 03:36:36,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 468 transitions, 7220 flow [2024-06-28 03:36:36,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:36:36,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:36:36,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-28 03:36:36,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.405 [2024-06-28 03:36:36,106 INFO L175 Difference]: Start difference. First operand has 262 places, 443 transitions, 6086 flow. Second operand 10 states and 162 transitions. [2024-06-28 03:36:36,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 468 transitions, 7220 flow [2024-06-28 03:36:36,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 468 transitions, 6947 flow, removed 69 selfloop flow, removed 5 redundant places. [2024-06-28 03:36:36,816 INFO L231 Difference]: Finished difference. Result has 270 places, 452 transitions, 6059 flow [2024-06-28 03:36:36,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5813, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6059, PETRI_PLACES=270, PETRI_TRANSITIONS=452} [2024-06-28 03:36:36,817 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 229 predicate places. [2024-06-28 03:36:36,817 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 452 transitions, 6059 flow [2024-06-28 03:36:36,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:36,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:36,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:36,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 03:36:36,817 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:36:36,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:36,818 INFO L85 PathProgramCache]: Analyzing trace with hash -2058713654, now seen corresponding path program 2 times [2024-06-28 03:36:36,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:36,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953087651] [2024-06-28 03:36:36,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:36,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:36,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:37,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:37,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:37,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953087651] [2024-06-28 03:36:37,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953087651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:37,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:37,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:36:37,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939822596] [2024-06-28 03:36:37,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:37,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:36:37,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:37,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:36:37,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:36:37,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:36:37,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 452 transitions, 6059 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:37,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:37,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:36:37,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:38,597 INFO L124 PetriNetUnfolderBase]: 2473/3977 cut-off events. [2024-06-28 03:36:38,598 INFO L125 PetriNetUnfolderBase]: For 264179/264179 co-relation queries the response was YES. [2024-06-28 03:36:38,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33681 conditions, 3977 events. 2473/3977 cut-off events. For 264179/264179 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 22933 event pairs, 444 based on Foata normal form. 1/3974 useless extension candidates. Maximal degree in co-relation 33554. Up to 3419 conditions per place. [2024-06-28 03:36:38,645 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 400 selfloop transitions, 70 changer transitions 0/475 dead transitions. [2024-06-28 03:36:38,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 475 transitions, 7147 flow [2024-06-28 03:36:38,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:36:38,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:36:38,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-28 03:36:38,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4625 [2024-06-28 03:36:38,646 INFO L175 Difference]: Start difference. First operand has 270 places, 452 transitions, 6059 flow. Second operand 8 states and 148 transitions. [2024-06-28 03:36:38,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 475 transitions, 7147 flow [2024-06-28 03:36:39,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 475 transitions, 7023 flow, removed 44 selfloop flow, removed 4 redundant places. [2024-06-28 03:36:39,357 INFO L231 Difference]: Finished difference. Result has 274 places, 455 transitions, 6161 flow [2024-06-28 03:36:39,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5935, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6161, PETRI_PLACES=274, PETRI_TRANSITIONS=455} [2024-06-28 03:36:39,357 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 233 predicate places. [2024-06-28 03:36:39,358 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 455 transitions, 6161 flow [2024-06-28 03:36:39,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:39,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:39,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:39,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 03:36:39,358 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:36:39,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:39,359 INFO L85 PathProgramCache]: Analyzing trace with hash 783279416, now seen corresponding path program 3 times [2024-06-28 03:36:39,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:39,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910429909] [2024-06-28 03:36:39,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:39,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:39,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:39,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:39,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:39,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910429909] [2024-06-28 03:36:39,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910429909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:39,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:39,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:36:39,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75575985] [2024-06-28 03:36:39,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:39,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:36:39,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:39,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:36:39,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:36:40,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:36:40,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 455 transitions, 6161 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:40,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:40,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:36:40,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:41,041 INFO L124 PetriNetUnfolderBase]: 2478/3984 cut-off events. [2024-06-28 03:36:41,041 INFO L125 PetriNetUnfolderBase]: For 272032/272032 co-relation queries the response was YES. [2024-06-28 03:36:41,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34177 conditions, 3984 events. 2478/3984 cut-off events. For 272032/272032 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 22978 event pairs, 446 based on Foata normal form. 1/3981 useless extension candidates. Maximal degree in co-relation 34049. Up to 3426 conditions per place. [2024-06-28 03:36:41,088 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 396 selfloop transitions, 75 changer transitions 0/476 dead transitions. [2024-06-28 03:36:41,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 476 transitions, 7241 flow [2024-06-28 03:36:41,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:36:41,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:36:41,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-28 03:36:41,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4625 [2024-06-28 03:36:41,089 INFO L175 Difference]: Start difference. First operand has 274 places, 455 transitions, 6161 flow. Second operand 8 states and 148 transitions. [2024-06-28 03:36:41,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 476 transitions, 7241 flow [2024-06-28 03:36:41,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 476 transitions, 7037 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-28 03:36:41,711 INFO L231 Difference]: Finished difference. Result has 276 places, 458 transitions, 6199 flow [2024-06-28 03:36:41,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5957, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6199, PETRI_PLACES=276, PETRI_TRANSITIONS=458} [2024-06-28 03:36:41,712 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 235 predicate places. [2024-06-28 03:36:41,712 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 458 transitions, 6199 flow [2024-06-28 03:36:41,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:41,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:41,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:41,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 03:36:41,713 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:36:41,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:41,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1010224806, now seen corresponding path program 4 times [2024-06-28 03:36:41,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:41,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103294329] [2024-06-28 03:36:41,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:41,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:41,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:42,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:42,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:42,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103294329] [2024-06-28 03:36:42,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103294329] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:42,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:42,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:36:42,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818336951] [2024-06-28 03:36:42,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:42,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:36:42,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:42,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:36:42,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:36:42,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:36:42,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 458 transitions, 6199 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:42,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:42,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:36:42,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:43,509 INFO L124 PetriNetUnfolderBase]: 2475/3980 cut-off events. [2024-06-28 03:36:43,510 INFO L125 PetriNetUnfolderBase]: For 278356/278356 co-relation queries the response was YES. [2024-06-28 03:36:43,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34415 conditions, 3980 events. 2475/3980 cut-off events. For 278356/278356 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 22980 event pairs, 446 based on Foata normal form. 1/3978 useless extension candidates. Maximal degree in co-relation 34286. Up to 3407 conditions per place. [2024-06-28 03:36:43,562 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 387 selfloop transitions, 87 changer transitions 0/479 dead transitions. [2024-06-28 03:36:43,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 479 transitions, 7311 flow [2024-06-28 03:36:43,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:36:43,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:36:43,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-28 03:36:43,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.459375 [2024-06-28 03:36:43,563 INFO L175 Difference]: Start difference. First operand has 276 places, 458 transitions, 6199 flow. Second operand 8 states and 147 transitions. [2024-06-28 03:36:43,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 479 transitions, 7311 flow [2024-06-28 03:36:44,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 479 transitions, 7091 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-28 03:36:44,247 INFO L231 Difference]: Finished difference. Result has 279 places, 464 transitions, 6304 flow [2024-06-28 03:36:44,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5979, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6304, PETRI_PLACES=279, PETRI_TRANSITIONS=464} [2024-06-28 03:36:44,248 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 238 predicate places. [2024-06-28 03:36:44,248 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 464 transitions, 6304 flow [2024-06-28 03:36:44,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:44,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:44,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:44,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 03:36:44,256 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)] === [2024-06-28 03:36:44,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:44,256 INFO L85 PathProgramCache]: Analyzing trace with hash -660710120, now seen corresponding path program 5 times [2024-06-28 03:36:44,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:44,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755731772] [2024-06-28 03:36:44,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:44,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:44,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:44,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:44,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:44,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755731772] [2024-06-28 03:36:44,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755731772] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:44,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:44,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:36:44,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335297128] [2024-06-28 03:36:44,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:44,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:36:44,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:44,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:36:44,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:36:45,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:36:45,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 464 transitions, 6304 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:45,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:45,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:36:45,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:45,904 INFO L124 PetriNetUnfolderBase]: 2465/3971 cut-off events. [2024-06-28 03:36:45,905 INFO L125 PetriNetUnfolderBase]: For 285414/285414 co-relation queries the response was YES. [2024-06-28 03:36:45,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34519 conditions, 3971 events. 2465/3971 cut-off events. For 285414/285414 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 22934 event pairs, 436 based on Foata normal form. 2/3971 useless extension candidates. Maximal degree in co-relation 34388. Up to 3503 conditions per place. [2024-06-28 03:36:45,955 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 403 selfloop transitions, 73 changer transitions 0/481 dead transitions. [2024-06-28 03:36:45,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 481 transitions, 7327 flow [2024-06-28 03:36:45,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:36:45,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:36:45,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-28 03:36:45,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-28 03:36:45,956 INFO L175 Difference]: Start difference. First operand has 279 places, 464 transitions, 6304 flow. Second operand 8 states and 144 transitions. [2024-06-28 03:36:45,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 481 transitions, 7327 flow [2024-06-28 03:36:46,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 481 transitions, 7091 flow, removed 68 selfloop flow, removed 4 redundant places. [2024-06-28 03:36:46,686 INFO L231 Difference]: Finished difference. Result has 283 places, 464 transitions, 6225 flow [2024-06-28 03:36:46,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6068, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6225, PETRI_PLACES=283, PETRI_TRANSITIONS=464} [2024-06-28 03:36:46,687 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 242 predicate places. [2024-06-28 03:36:46,687 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 464 transitions, 6225 flow [2024-06-28 03:36:46,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:46,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:46,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:46,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 03:36:46,687 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)] === [2024-06-28 03:36:46,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:46,688 INFO L85 PathProgramCache]: Analyzing trace with hash -895170600, now seen corresponding path program 6 times [2024-06-28 03:36:46,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:46,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126334836] [2024-06-28 03:36:46,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:46,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:46,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:47,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:47,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:47,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126334836] [2024-06-28 03:36:47,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126334836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:47,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:47,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:36:47,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471388758] [2024-06-28 03:36:47,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:47,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:36:47,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:47,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:36:47,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:36:47,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:36:47,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 464 transitions, 6225 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:47,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:47,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:36:47,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:48,237 INFO L124 PetriNetUnfolderBase]: 2491/4007 cut-off events. [2024-06-28 03:36:48,237 INFO L125 PetriNetUnfolderBase]: For 296966/296966 co-relation queries the response was YES. [2024-06-28 03:36:48,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35127 conditions, 4007 events. 2491/4007 cut-off events. For 296966/296966 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 23184 event pairs, 431 based on Foata normal form. 2/4007 useless extension candidates. Maximal degree in co-relation 34994. Up to 3404 conditions per place. [2024-06-28 03:36:48,288 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 362 selfloop transitions, 120 changer transitions 0/487 dead transitions. [2024-06-28 03:36:48,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 487 transitions, 7534 flow [2024-06-28 03:36:48,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:36:48,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:36:48,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-28 03:36:48,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.459375 [2024-06-28 03:36:48,295 INFO L175 Difference]: Start difference. First operand has 283 places, 464 transitions, 6225 flow. Second operand 8 states and 147 transitions. [2024-06-28 03:36:48,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 487 transitions, 7534 flow [2024-06-28 03:36:49,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 487 transitions, 7114 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-28 03:36:49,083 INFO L231 Difference]: Finished difference. Result has 284 places, 470 transitions, 6195 flow [2024-06-28 03:36:49,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5805, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6195, PETRI_PLACES=284, PETRI_TRANSITIONS=470} [2024-06-28 03:36:49,083 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 243 predicate places. [2024-06-28 03:36:49,084 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 470 transitions, 6195 flow [2024-06-28 03:36:49,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:49,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:49,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:49,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 03:36:49,084 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:36:49,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:49,085 INFO L85 PathProgramCache]: Analyzing trace with hash 788312762, now seen corresponding path program 7 times [2024-06-28 03:36:49,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:49,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022204404] [2024-06-28 03:36:49,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:49,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:49,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:49,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:49,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:49,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022204404] [2024-06-28 03:36:49,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022204404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:49,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:49,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:36:49,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527334741] [2024-06-28 03:36:49,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:49,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:36:49,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:49,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:36:49,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:36:49,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:36:49,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 470 transitions, 6195 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:49,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:49,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:36:49,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:50,695 INFO L124 PetriNetUnfolderBase]: 2485/4003 cut-off events. [2024-06-28 03:36:50,695 INFO L125 PetriNetUnfolderBase]: For 299086/299086 co-relation queries the response was YES. [2024-06-28 03:36:50,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35084 conditions, 4003 events. 2485/4003 cut-off events. For 299086/299086 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 23181 event pairs, 480 based on Foata normal form. 2/4004 useless extension candidates. Maximal degree in co-relation 34949. Up to 3696 conditions per place. [2024-06-28 03:36:50,745 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 454 selfloop transitions, 25 changer transitions 0/484 dead transitions. [2024-06-28 03:36:50,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 484 transitions, 7213 flow [2024-06-28 03:36:50,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:36:50,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:36:50,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-28 03:36:50,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428125 [2024-06-28 03:36:50,754 INFO L175 Difference]: Start difference. First operand has 284 places, 470 transitions, 6195 flow. Second operand 8 states and 137 transitions. [2024-06-28 03:36:50,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 484 transitions, 7213 flow [2024-06-28 03:36:51,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 484 transitions, 6903 flow, removed 42 selfloop flow, removed 5 redundant places. [2024-06-28 03:36:51,550 INFO L231 Difference]: Finished difference. Result has 287 places, 470 transitions, 5942 flow [2024-06-28 03:36:51,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5885, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5942, PETRI_PLACES=287, PETRI_TRANSITIONS=470} [2024-06-28 03:36:51,551 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 246 predicate places. [2024-06-28 03:36:51,551 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 470 transitions, 5942 flow [2024-06-28 03:36:51,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:51,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:51,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:51,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 03:36:51,552 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:36:51,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:51,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1496516378, now seen corresponding path program 8 times [2024-06-28 03:36:51,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:51,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311081409] [2024-06-28 03:36:51,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:51,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:51,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:52,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:52,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:52,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311081409] [2024-06-28 03:36:52,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311081409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:52,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:52,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:36:52,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850253846] [2024-06-28 03:36:52,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:52,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:36:52,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:52,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:36:52,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:36:52,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:36:52,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 470 transitions, 5942 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:52,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:52,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:36:52,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:53,159 INFO L124 PetriNetUnfolderBase]: 2489/4007 cut-off events. [2024-06-28 03:36:53,160 INFO L125 PetriNetUnfolderBase]: For 305302/305304 co-relation queries the response was YES. [2024-06-28 03:36:53,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34702 conditions, 4007 events. 2489/4007 cut-off events. For 305302/305304 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 23196 event pairs, 480 based on Foata normal form. 6/4012 useless extension candidates. Maximal degree in co-relation 34566. Up to 3624 conditions per place. [2024-06-28 03:36:53,212 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 429 selfloop transitions, 54 changer transitions 0/488 dead transitions. [2024-06-28 03:36:53,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 488 transitions, 7188 flow [2024-06-28 03:36:53,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:36:53,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:36:53,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-28 03:36:53,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44375 [2024-06-28 03:36:53,213 INFO L175 Difference]: Start difference. First operand has 287 places, 470 transitions, 5942 flow. Second operand 8 states and 142 transitions. [2024-06-28 03:36:53,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 488 transitions, 7188 flow [2024-06-28 03:36:54,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 488 transitions, 7091 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 03:36:54,283 INFO L231 Difference]: Finished difference. Result has 288 places, 473 transitions, 6030 flow [2024-06-28 03:36:54,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5845, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6030, PETRI_PLACES=288, PETRI_TRANSITIONS=473} [2024-06-28 03:36:54,283 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 247 predicate places. [2024-06-28 03:36:54,283 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 473 transitions, 6030 flow [2024-06-28 03:36:54,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:54,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:54,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:54,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 03:36:54,284 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:36:54,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:54,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1021892218, now seen corresponding path program 9 times [2024-06-28 03:36:54,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:54,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658448131] [2024-06-28 03:36:54,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:54,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:54,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:55,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:55,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:55,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658448131] [2024-06-28 03:36:55,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658448131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:55,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:55,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:36:55,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570445430] [2024-06-28 03:36:55,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:55,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:36:55,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:55,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:36:55,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:36:55,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:36:55,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 473 transitions, 6030 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:55,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:55,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:36:55,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:55,971 INFO L124 PetriNetUnfolderBase]: 2499/4023 cut-off events. [2024-06-28 03:36:55,971 INFO L125 PetriNetUnfolderBase]: For 309393/309395 co-relation queries the response was YES. [2024-06-28 03:36:56,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35060 conditions, 4023 events. 2499/4023 cut-off events. For 309393/309395 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 23318 event pairs, 482 based on Foata normal form. 4/4026 useless extension candidates. Maximal degree in co-relation 34923. Up to 3630 conditions per place. [2024-06-28 03:36:56,026 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 431 selfloop transitions, 58 changer transitions 0/494 dead transitions. [2024-06-28 03:36:56,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 494 transitions, 7318 flow [2024-06-28 03:36:56,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:36:56,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:36:56,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-28 03:36:56,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43 [2024-06-28 03:36:56,027 INFO L175 Difference]: Start difference. First operand has 288 places, 473 transitions, 6030 flow. Second operand 10 states and 172 transitions. [2024-06-28 03:36:56,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 494 transitions, 7318 flow [2024-06-28 03:36:56,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 494 transitions, 7180 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-28 03:36:56,868 INFO L231 Difference]: Finished difference. Result has 293 places, 476 transitions, 6090 flow [2024-06-28 03:36:56,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5894, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6090, PETRI_PLACES=293, PETRI_TRANSITIONS=476} [2024-06-28 03:36:56,868 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 252 predicate places. [2024-06-28 03:36:56,869 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 476 transitions, 6090 flow [2024-06-28 03:36:56,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:56,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:56,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:56,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 03:36:56,869 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:36:56,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:56,870 INFO L85 PathProgramCache]: Analyzing trace with hash 214922342, now seen corresponding path program 10 times [2024-06-28 03:36:56,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:56,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103137367] [2024-06-28 03:36:56,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:56,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:56,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:57,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:57,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:57,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103137367] [2024-06-28 03:36:57,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103137367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:57,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:57,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:36:57,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002151823] [2024-06-28 03:36:57,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:57,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:36:57,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:57,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:36:57,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:36:57,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:36:57,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 476 transitions, 6090 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:57,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:57,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:36:57,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:58,467 INFO L124 PetriNetUnfolderBase]: 2535/4070 cut-off events. [2024-06-28 03:36:58,467 INFO L125 PetriNetUnfolderBase]: For 326310/326312 co-relation queries the response was YES. [2024-06-28 03:36:58,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35710 conditions, 4070 events. 2535/4070 cut-off events. For 326310/326312 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 23542 event pairs, 448 based on Foata normal form. 6/4075 useless extension candidates. Maximal degree in co-relation 35572. Up to 2983 conditions per place. [2024-06-28 03:36:58,522 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 282 selfloop transitions, 212 changer transitions 0/499 dead transitions. [2024-06-28 03:36:58,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 499 transitions, 7724 flow [2024-06-28 03:36:58,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:36:58,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:36:58,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-28 03:36:58,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.471875 [2024-06-28 03:36:58,524 INFO L175 Difference]: Start difference. First operand has 293 places, 476 transitions, 6090 flow. Second operand 8 states and 151 transitions. [2024-06-28 03:36:58,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 499 transitions, 7724 flow [2024-06-28 03:36:59,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 499 transitions, 7560 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-28 03:36:59,381 INFO L231 Difference]: Finished difference. Result has 293 places, 483 transitions, 6503 flow [2024-06-28 03:36:59,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5926, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=206, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6503, PETRI_PLACES=293, PETRI_TRANSITIONS=483} [2024-06-28 03:36:59,382 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 252 predicate places. [2024-06-28 03:36:59,382 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 483 transitions, 6503 flow [2024-06-28 03:36:59,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:59,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:59,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:59,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 03:36:59,383 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)] === [2024-06-28 03:36:59,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:59,383 INFO L85 PathProgramCache]: Analyzing trace with hash 838326028, now seen corresponding path program 11 times [2024-06-28 03:36:59,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:59,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119807367] [2024-06-28 03:36:59,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:59,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:59,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:00,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:00,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:00,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119807367] [2024-06-28 03:37:00,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119807367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:00,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:00,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:37:00,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857955787] [2024-06-28 03:37:00,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:00,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:37:00,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:00,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:37:00,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:37:00,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:37:00,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 483 transitions, 6503 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:00,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:00,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:37:00,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:01,041 INFO L124 PetriNetUnfolderBase]: 2523/4052 cut-off events. [2024-06-28 03:37:01,041 INFO L125 PetriNetUnfolderBase]: For 327698/327700 co-relation queries the response was YES. [2024-06-28 03:37:01,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35905 conditions, 4052 events. 2523/4052 cut-off events. For 327698/327700 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 23384 event pairs, 447 based on Foata normal form. 6/4057 useless extension candidates. Maximal degree in co-relation 35766. Up to 2975 conditions per place. [2024-06-28 03:37:01,091 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 285 selfloop transitions, 209 changer transitions 0/499 dead transitions. [2024-06-28 03:37:01,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 499 transitions, 7999 flow [2024-06-28 03:37:01,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:37:01,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:37:01,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-28 03:37:01,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.471875 [2024-06-28 03:37:01,092 INFO L175 Difference]: Start difference. First operand has 293 places, 483 transitions, 6503 flow. Second operand 8 states and 151 transitions. [2024-06-28 03:37:01,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 499 transitions, 7999 flow [2024-06-28 03:37:01,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 499 transitions, 7543 flow, removed 52 selfloop flow, removed 4 redundant places. [2024-06-28 03:37:01,888 INFO L231 Difference]: Finished difference. Result has 297 places, 483 transitions, 6474 flow [2024-06-28 03:37:01,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6047, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6474, PETRI_PLACES=297, PETRI_TRANSITIONS=483} [2024-06-28 03:37:01,889 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 256 predicate places. [2024-06-28 03:37:01,889 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 483 transitions, 6474 flow [2024-06-28 03:37:01,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:01,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:01,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:01,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 03:37:01,890 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)] === [2024-06-28 03:37:01,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:01,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1015636108, now seen corresponding path program 12 times [2024-06-28 03:37:01,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:01,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496511469] [2024-06-28 03:37:01,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:01,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:01,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:02,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:02,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:02,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496511469] [2024-06-28 03:37:02,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496511469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:02,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:02,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:37:02,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700921478] [2024-06-28 03:37:02,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:02,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:37:02,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:02,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:37:02,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:37:02,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:37:02,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 483 transitions, 6474 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:02,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:02,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:37:02,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:03,567 INFO L124 PetriNetUnfolderBase]: 2513/4039 cut-off events. [2024-06-28 03:37:03,568 INFO L125 PetriNetUnfolderBase]: For 324444/324446 co-relation queries the response was YES. [2024-06-28 03:37:03,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35569 conditions, 4039 events. 2513/4039 cut-off events. For 324444/324446 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 23346 event pairs, 483 based on Foata normal form. 4/4042 useless extension candidates. Maximal degree in co-relation 35429. Up to 3710 conditions per place. [2024-06-28 03:37:03,622 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 448 selfloop transitions, 42 changer transitions 0/495 dead transitions. [2024-06-28 03:37:03,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 495 transitions, 7508 flow [2024-06-28 03:37:03,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:37:03,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:37:03,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-28 03:37:03,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.434375 [2024-06-28 03:37:03,624 INFO L175 Difference]: Start difference. First operand has 297 places, 483 transitions, 6474 flow. Second operand 8 states and 139 transitions. [2024-06-28 03:37:03,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 495 transitions, 7508 flow [2024-06-28 03:37:04,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 495 transitions, 7063 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-28 03:37:04,509 INFO L231 Difference]: Finished difference. Result has 299 places, 483 transitions, 6120 flow [2024-06-28 03:37:04,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6029, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6120, PETRI_PLACES=299, PETRI_TRANSITIONS=483} [2024-06-28 03:37:04,510 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 258 predicate places. [2024-06-28 03:37:04,510 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 483 transitions, 6120 flow [2024-06-28 03:37:04,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:04,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:04,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:04,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 03:37:04,511 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)] === [2024-06-28 03:37:04,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:04,512 INFO L85 PathProgramCache]: Analyzing trace with hash 953536186, now seen corresponding path program 13 times [2024-06-28 03:37:04,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:04,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449755021] [2024-06-28 03:37:04,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:04,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:04,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:05,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:05,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:05,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449755021] [2024-06-28 03:37:05,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449755021] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:05,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:05,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:37:05,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004095124] [2024-06-28 03:37:05,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:05,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:37:05,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:05,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:37:05,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:37:05,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:37:05,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 483 transitions, 6120 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:05,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:05,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:37:05,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:06,062 INFO L124 PetriNetUnfolderBase]: 2503/4028 cut-off events. [2024-06-28 03:37:06,063 INFO L125 PetriNetUnfolderBase]: For 324599/324601 co-relation queries the response was YES. [2024-06-28 03:37:06,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34797 conditions, 4028 events. 2503/4028 cut-off events. For 324599/324601 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 23317 event pairs, 457 based on Foata normal form. 4/4031 useless extension candidates. Maximal degree in co-relation 34656. Up to 2959 conditions per place. [2024-06-28 03:37:06,121 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 263 selfloop transitions, 232 changer transitions 0/500 dead transitions. [2024-06-28 03:37:06,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 500 transitions, 7377 flow [2024-06-28 03:37:06,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:37:06,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:37:06,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-28 03:37:06,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.459375 [2024-06-28 03:37:06,122 INFO L175 Difference]: Start difference. First operand has 299 places, 483 transitions, 6120 flow. Second operand 8 states and 147 transitions. [2024-06-28 03:37:06,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 500 transitions, 7377 flow [2024-06-28 03:37:07,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 500 transitions, 7182 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-28 03:37:07,088 INFO L231 Difference]: Finished difference. Result has 298 places, 483 transitions, 6395 flow [2024-06-28 03:37:07,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5925, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=232, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6395, PETRI_PLACES=298, PETRI_TRANSITIONS=483} [2024-06-28 03:37:07,089 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 257 predicate places. [2024-06-28 03:37:07,089 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 483 transitions, 6395 flow [2024-06-28 03:37:07,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:07,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:07,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:07,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 03:37:07,090 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)] === [2024-06-28 03:37:07,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:07,090 INFO L85 PathProgramCache]: Analyzing trace with hash 214799024, now seen corresponding path program 4 times [2024-06-28 03:37:07,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:07,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728071470] [2024-06-28 03:37:07,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:07,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:07,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:07,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:07,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:07,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728071470] [2024-06-28 03:37:07,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728071470] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:07,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:07,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:37:07,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337392432] [2024-06-28 03:37:07,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:07,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:37:07,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:07,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:37:07,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:37:07,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:37:07,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 483 transitions, 6395 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:07,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:07,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:37:07,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:08,919 INFO L124 PetriNetUnfolderBase]: 2534/4085 cut-off events. [2024-06-28 03:37:08,919 INFO L125 PetriNetUnfolderBase]: For 356183/356185 co-relation queries the response was YES. [2024-06-28 03:37:08,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35635 conditions, 4085 events. 2534/4085 cut-off events. For 356183/356185 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 23837 event pairs, 450 based on Foata normal form. 14/4098 useless extension candidates. Maximal degree in co-relation 35494. Up to 3359 conditions per place. [2024-06-28 03:37:08,974 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 374 selfloop transitions, 124 changer transitions 0/503 dead transitions. [2024-06-28 03:37:08,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 503 transitions, 7612 flow [2024-06-28 03:37:08,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:37:08,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:37:08,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-28 03:37:08,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.459375 [2024-06-28 03:37:08,976 INFO L175 Difference]: Start difference. First operand has 298 places, 483 transitions, 6395 flow. Second operand 8 states and 147 transitions. [2024-06-28 03:37:08,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 503 transitions, 7612 flow [2024-06-28 03:37:09,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 503 transitions, 6989 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-28 03:37:09,806 INFO L231 Difference]: Finished difference. Result has 296 places, 485 transitions, 6110 flow [2024-06-28 03:37:09,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5772, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6110, PETRI_PLACES=296, PETRI_TRANSITIONS=485} [2024-06-28 03:37:09,807 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 255 predicate places. [2024-06-28 03:37:09,807 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 485 transitions, 6110 flow [2024-06-28 03:37:09,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:09,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:09,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:09,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 03:37:09,807 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)] === [2024-06-28 03:37:09,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:09,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1251641402, now seen corresponding path program 5 times [2024-06-28 03:37:09,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:09,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951093579] [2024-06-28 03:37:09,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:09,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:09,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:10,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:10,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:10,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951093579] [2024-06-28 03:37:10,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951093579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:10,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:10,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:37:10,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988321948] [2024-06-28 03:37:10,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:10,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:37:10,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:10,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:37:10,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:37:10,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:37:10,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 485 transitions, 6110 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:10,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:10,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:37:10,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:12,075 INFO L124 PetriNetUnfolderBase]: 2585/4153 cut-off events. [2024-06-28 03:37:12,075 INFO L125 PetriNetUnfolderBase]: For 352417/352419 co-relation queries the response was YES. [2024-06-28 03:37:12,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36557 conditions, 4153 events. 2585/4153 cut-off events. For 352417/352419 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 24143 event pairs, 486 based on Foata normal form. 5/4157 useless extension candidates. Maximal degree in co-relation 36415. Up to 3669 conditions per place. [2024-06-28 03:37:12,130 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 421 selfloop transitions, 88 changer transitions 0/514 dead transitions. [2024-06-28 03:37:12,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 514 transitions, 7797 flow [2024-06-28 03:37:12,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:37:12,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:37:12,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2024-06-28 03:37:12,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43636363636363634 [2024-06-28 03:37:12,132 INFO L175 Difference]: Start difference. First operand has 296 places, 485 transitions, 6110 flow. Second operand 11 states and 192 transitions. [2024-06-28 03:37:12,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 514 transitions, 7797 flow [2024-06-28 03:37:13,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 514 transitions, 7499 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-28 03:37:13,193 INFO L231 Difference]: Finished difference. Result has 302 places, 495 transitions, 6319 flow [2024-06-28 03:37:13,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5812, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6319, PETRI_PLACES=302, PETRI_TRANSITIONS=495} [2024-06-28 03:37:13,194 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 261 predicate places. [2024-06-28 03:37:13,194 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 495 transitions, 6319 flow [2024-06-28 03:37:13,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:13,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:13,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:13,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 03:37:13,195 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)] === [2024-06-28 03:37:13,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:13,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1251641836, now seen corresponding path program 2 times [2024-06-28 03:37:13,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:13,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756407385] [2024-06-28 03:37:13,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:13,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:13,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:14,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:14,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:14,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756407385] [2024-06-28 03:37:14,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756407385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:14,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:14,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:37:14,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555821769] [2024-06-28 03:37:14,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:14,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:37:14,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:14,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:37:14,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:37:14,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:37:14,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 495 transitions, 6319 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:14,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:14,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:37:14,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:15,438 INFO L124 PetriNetUnfolderBase]: 2593/4162 cut-off events. [2024-06-28 03:37:15,438 INFO L125 PetriNetUnfolderBase]: For 363731/363731 co-relation queries the response was YES. [2024-06-28 03:37:15,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37281 conditions, 4162 events. 2593/4162 cut-off events. For 363731/363731 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 24159 event pairs, 489 based on Foata normal form. 2/4163 useless extension candidates. Maximal degree in co-relation 37137. Up to 3863 conditions per place. [2024-06-28 03:37:15,496 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 479 selfloop transitions, 26 changer transitions 0/510 dead transitions. [2024-06-28 03:37:15,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 510 transitions, 7469 flow [2024-06-28 03:37:15,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:37:15,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:37:15,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-06-28 03:37:15,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3975 [2024-06-28 03:37:15,497 INFO L175 Difference]: Start difference. First operand has 302 places, 495 transitions, 6319 flow. Second operand 10 states and 159 transitions. [2024-06-28 03:37:15,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 510 transitions, 7469 flow [2024-06-28 03:37:16,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 510 transitions, 7182 flow, removed 92 selfloop flow, removed 7 redundant places. [2024-06-28 03:37:16,757 INFO L231 Difference]: Finished difference. Result has 305 places, 497 transitions, 6200 flow [2024-06-28 03:37:16,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6032, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6200, PETRI_PLACES=305, PETRI_TRANSITIONS=497} [2024-06-28 03:37:16,757 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 264 predicate places. [2024-06-28 03:37:16,757 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 497 transitions, 6200 flow [2024-06-28 03:37:16,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:16,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:16,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:16,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 03:37:16,758 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)] === [2024-06-28 03:37:16,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:16,759 INFO L85 PathProgramCache]: Analyzing trace with hash 214809936, now seen corresponding path program 6 times [2024-06-28 03:37:16,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:16,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225463816] [2024-06-28 03:37:16,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:16,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:16,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:17,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:17,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:17,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225463816] [2024-06-28 03:37:17,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225463816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:17,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:17,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:37:17,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476802462] [2024-06-28 03:37:17,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:17,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:37:17,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:17,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:37:17,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:37:17,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:37:17,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 497 transitions, 6200 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:17,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:17,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:37:17,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:18,704 INFO L124 PetriNetUnfolderBase]: 2603/4184 cut-off events. [2024-06-28 03:37:18,704 INFO L125 PetriNetUnfolderBase]: For 374043/374045 co-relation queries the response was YES. [2024-06-28 03:37:18,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37279 conditions, 4184 events. 2603/4184 cut-off events. For 374043/374045 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 24342 event pairs, 446 based on Foata normal form. 4/4187 useless extension candidates. Maximal degree in co-relation 37133. Up to 3396 conditions per place. [2024-06-28 03:37:18,762 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 397 selfloop transitions, 148 changer transitions 0/550 dead transitions. [2024-06-28 03:37:18,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 550 transitions, 7907 flow [2024-06-28 03:37:18,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:37:18,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:37:18,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-28 03:37:18,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 03:37:18,763 INFO L175 Difference]: Start difference. First operand has 305 places, 497 transitions, 6200 flow. Second operand 9 states and 160 transitions. [2024-06-28 03:37:18,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 550 transitions, 7907 flow [2024-06-28 03:37:19,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 550 transitions, 7757 flow, removed 51 selfloop flow, removed 8 redundant places. [2024-06-28 03:37:19,824 INFO L231 Difference]: Finished difference. Result has 309 places, 535 transitions, 6903 flow [2024-06-28 03:37:19,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6050, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6903, PETRI_PLACES=309, PETRI_TRANSITIONS=535} [2024-06-28 03:37:19,824 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 268 predicate places. [2024-06-28 03:37:19,824 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 535 transitions, 6903 flow [2024-06-28 03:37:19,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:19,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:19,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:19,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 03:37:19,825 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)] === [2024-06-28 03:37:19,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:19,826 INFO L85 PathProgramCache]: Analyzing trace with hash 215167986, now seen corresponding path program 7 times [2024-06-28 03:37:19,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:19,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542583498] [2024-06-28 03:37:19,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:19,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:19,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:20,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:20,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:20,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542583498] [2024-06-28 03:37:20,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542583498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:20,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:20,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:37:20,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084285993] [2024-06-28 03:37:20,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:20,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:37:20,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:20,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:37:20,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:37:20,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:37:20,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 535 transitions, 6903 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:20,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:20,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:37:20,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:21,759 INFO L124 PetriNetUnfolderBase]: 2615/4192 cut-off events. [2024-06-28 03:37:21,759 INFO L125 PetriNetUnfolderBase]: For 384403/384405 co-relation queries the response was YES. [2024-06-28 03:37:21,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38492 conditions, 4192 events. 2615/4192 cut-off events. For 384403/384405 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 24309 event pairs, 448 based on Foata normal form. 4/4195 useless extension candidates. Maximal degree in co-relation 38342. Up to 3372 conditions per place. [2024-06-28 03:37:21,821 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 412 selfloop transitions, 145 changer transitions 0/562 dead transitions. [2024-06-28 03:37:21,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 562 transitions, 8765 flow [2024-06-28 03:37:21,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:37:21,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:37:21,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-28 03:37:21,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-28 03:37:21,823 INFO L175 Difference]: Start difference. First operand has 309 places, 535 transitions, 6903 flow. Second operand 9 states and 162 transitions. [2024-06-28 03:37:21,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 562 transitions, 8765 flow [2024-06-28 03:37:22,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 562 transitions, 8418 flow, removed 114 selfloop flow, removed 3 redundant places. [2024-06-28 03:37:22,852 INFO L231 Difference]: Finished difference. Result has 317 places, 548 transitions, 7251 flow [2024-06-28 03:37:22,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6596, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7251, PETRI_PLACES=317, PETRI_TRANSITIONS=548} [2024-06-28 03:37:22,853 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 276 predicate places. [2024-06-28 03:37:22,853 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 548 transitions, 7251 flow [2024-06-28 03:37:22,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:22,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:22,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:22,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 03:37:22,853 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)] === [2024-06-28 03:37:22,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:22,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1252117066, now seen corresponding path program 3 times [2024-06-28 03:37:22,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:22,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541954464] [2024-06-28 03:37:22,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:22,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:22,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:23,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:23,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:23,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541954464] [2024-06-28 03:37:23,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541954464] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:23,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:23,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:37:23,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705403885] [2024-06-28 03:37:23,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:23,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:37:23,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:23,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:37:23,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:37:23,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:37:23,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 548 transitions, 7251 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:23,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:23,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:37:23,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:24,982 INFO L124 PetriNetUnfolderBase]: 2623/4204 cut-off events. [2024-06-28 03:37:24,982 INFO L125 PetriNetUnfolderBase]: For 398165/398165 co-relation queries the response was YES. [2024-06-28 03:37:25,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39314 conditions, 4204 events. 2623/4204 cut-off events. For 398165/398165 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 24376 event pairs, 471 based on Foata normal form. 2/4205 useless extension candidates. Maximal degree in co-relation 39160. Up to 3892 conditions per place. [2024-06-28 03:37:25,041 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 530 selfloop transitions, 29 changer transitions 0/564 dead transitions. [2024-06-28 03:37:25,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 564 transitions, 8521 flow [2024-06-28 03:37:25,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:37:25,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:37:25,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-28 03:37:25,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025 [2024-06-28 03:37:25,043 INFO L175 Difference]: Start difference. First operand has 317 places, 548 transitions, 7251 flow. Second operand 10 states and 161 transitions. [2024-06-28 03:37:25,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 564 transitions, 8521 flow [2024-06-28 03:37:26,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 564 transitions, 8226 flow, removed 88 selfloop flow, removed 3 redundant places. [2024-06-28 03:37:26,180 INFO L231 Difference]: Finished difference. Result has 324 places, 550 transitions, 7139 flow [2024-06-28 03:37:26,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6956, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=519, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7139, PETRI_PLACES=324, PETRI_TRANSITIONS=550} [2024-06-28 03:37:26,180 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 283 predicate places. [2024-06-28 03:37:26,180 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 550 transitions, 7139 flow [2024-06-28 03:37:26,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:26,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:26,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:26,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 03:37:26,181 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)] === [2024-06-28 03:37:26,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:26,181 INFO L85 PathProgramCache]: Analyzing trace with hash 838334956, now seen corresponding path program 4 times [2024-06-28 03:37:26,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:26,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561477520] [2024-06-28 03:37:26,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:26,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:26,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:27,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:27,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:27,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561477520] [2024-06-28 03:37:27,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561477520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:27,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:27,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:37:27,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24598369] [2024-06-28 03:37:27,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:27,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:37:27,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:27,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:37:27,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:37:27,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:37:27,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 550 transitions, 7139 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:27,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:27,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:37:27,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:28,113 INFO L124 PetriNetUnfolderBase]: 2631/4229 cut-off events. [2024-06-28 03:37:28,113 INFO L125 PetriNetUnfolderBase]: For 406617/406629 co-relation queries the response was YES. [2024-06-28 03:37:28,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39409 conditions, 4229 events. 2631/4229 cut-off events. For 406617/406629 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 24617 event pairs, 415 based on Foata normal form. 14/4242 useless extension candidates. Maximal degree in co-relation 39253. Up to 3884 conditions per place. [2024-06-28 03:37:28,175 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 518 selfloop transitions, 42 changer transitions 0/565 dead transitions. [2024-06-28 03:37:28,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 565 transitions, 8419 flow [2024-06-28 03:37:28,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:37:28,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:37:28,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-28 03:37:28,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41388888888888886 [2024-06-28 03:37:28,176 INFO L175 Difference]: Start difference. First operand has 324 places, 550 transitions, 7139 flow. Second operand 9 states and 149 transitions. [2024-06-28 03:37:28,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 565 transitions, 8419 flow [2024-06-28 03:37:29,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 565 transitions, 8252 flow, removed 56 selfloop flow, removed 8 redundant places. [2024-06-28 03:37:29,526 INFO L231 Difference]: Finished difference. Result has 325 places, 552 transitions, 7185 flow [2024-06-28 03:37:29,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6972, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=550, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7185, PETRI_PLACES=325, PETRI_TRANSITIONS=552} [2024-06-28 03:37:29,527 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 284 predicate places. [2024-06-28 03:37:29,527 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 552 transitions, 7185 flow [2024-06-28 03:37:29,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:29,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:29,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:29,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 03:37:29,528 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)] === [2024-06-28 03:37:29,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:29,528 INFO L85 PathProgramCache]: Analyzing trace with hash 838322432, now seen corresponding path program 8 times [2024-06-28 03:37:29,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:29,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230091762] [2024-06-28 03:37:29,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:29,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:29,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:30,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:30,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:30,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230091762] [2024-06-28 03:37:30,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230091762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:30,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:30,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:37:30,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016896763] [2024-06-28 03:37:30,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:30,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:37:30,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:30,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:37:30,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:37:30,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:37:30,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 552 transitions, 7185 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:30,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:30,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:37:30,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:31,509 INFO L124 PetriNetUnfolderBase]: 2633/4231 cut-off events. [2024-06-28 03:37:31,510 INFO L125 PetriNetUnfolderBase]: For 411811/411813 co-relation queries the response was YES. [2024-06-28 03:37:31,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39361 conditions, 4231 events. 2633/4231 cut-off events. For 411811/411813 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 24611 event pairs, 448 based on Foata normal form. 4/4234 useless extension candidates. Maximal degree in co-relation 39204. Up to 3440 conditions per place. [2024-06-28 03:37:31,570 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 421 selfloop transitions, 142 changer transitions 0/568 dead transitions. [2024-06-28 03:37:31,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 568 transitions, 8634 flow [2024-06-28 03:37:31,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:37:31,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:37:31,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-28 03:37:31,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 03:37:31,573 INFO L175 Difference]: Start difference. First operand has 325 places, 552 transitions, 7185 flow. Second operand 9 states and 160 transitions. [2024-06-28 03:37:31,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 568 transitions, 8634 flow [2024-06-28 03:37:32,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 568 transitions, 8437 flow, removed 58 selfloop flow, removed 7 redundant places. [2024-06-28 03:37:32,907 INFO L231 Difference]: Finished difference. Result has 327 places, 556 transitions, 7418 flow [2024-06-28 03:37:32,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6988, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7418, PETRI_PLACES=327, PETRI_TRANSITIONS=556} [2024-06-28 03:37:32,907 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 286 predicate places. [2024-06-28 03:37:32,908 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 556 transitions, 7418 flow [2024-06-28 03:37:32,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:32,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:32,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:32,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 03:37:32,908 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)] === [2024-06-28 03:37:32,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:32,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1553328030, now seen corresponding path program 14 times [2024-06-28 03:37:32,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:32,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936123988] [2024-06-28 03:37:32,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:32,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:32,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:33,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:33,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:33,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936123988] [2024-06-28 03:37:33,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936123988] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:33,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:33,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:37:33,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379426691] [2024-06-28 03:37:33,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:33,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:37:33,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:33,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:37:33,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:37:33,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:37:33,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 556 transitions, 7418 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:33,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:33,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:37:33,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:34,584 INFO L124 PetriNetUnfolderBase]: 2820/4518 cut-off events. [2024-06-28 03:37:34,584 INFO L125 PetriNetUnfolderBase]: For 411521/411523 co-relation queries the response was YES. [2024-06-28 03:37:34,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41615 conditions, 4518 events. 2820/4518 cut-off events. For 411521/411523 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 26688 event pairs, 421 based on Foata normal form. 6/4523 useless extension candidates. Maximal degree in co-relation 41457. Up to 3683 conditions per place. [2024-06-28 03:37:34,656 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 480 selfloop transitions, 181 changer transitions 0/666 dead transitions. [2024-06-28 03:37:34,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 666 transitions, 10077 flow [2024-06-28 03:37:34,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:37:34,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:37:34,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-28 03:37:34,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-28 03:37:34,658 INFO L175 Difference]: Start difference. First operand has 327 places, 556 transitions, 7418 flow. Second operand 9 states and 168 transitions. [2024-06-28 03:37:34,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 666 transitions, 10077 flow [2024-06-28 03:37:36,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 666 transitions, 9544 flow, removed 107 selfloop flow, removed 6 redundant places. [2024-06-28 03:37:36,192 INFO L231 Difference]: Finished difference. Result has 332 places, 620 transitions, 8510 flow [2024-06-28 03:37:36,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6941, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8510, PETRI_PLACES=332, PETRI_TRANSITIONS=620} [2024-06-28 03:37:36,193 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 291 predicate places. [2024-06-28 03:37:36,193 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 620 transitions, 8510 flow [2024-06-28 03:37:36,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:36,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:36,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:36,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 03:37:36,194 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)] === [2024-06-28 03:37:36,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:36,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1841170786, now seen corresponding path program 5 times [2024-06-28 03:37:36,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:36,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498775722] [2024-06-28 03:37:36,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:36,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:36,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:36,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:36,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:36,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498775722] [2024-06-28 03:37:36,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498775722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:36,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:36,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:37:36,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424404756] [2024-06-28 03:37:36,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:36,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:37:36,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:36,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:37:36,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:37:37,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:37:37,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 620 transitions, 8510 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:37,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:37,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:37:37,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:38,149 INFO L124 PetriNetUnfolderBase]: 2828/4531 cut-off events. [2024-06-28 03:37:38,149 INFO L125 PetriNetUnfolderBase]: For 407944/407944 co-relation queries the response was YES. [2024-06-28 03:37:38,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41674 conditions, 4531 events. 2828/4531 cut-off events. For 407944/407944 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 26722 event pairs, 458 based on Foata normal form. 2/4532 useless extension candidates. Maximal degree in co-relation 41513. Up to 4169 conditions per place. [2024-06-28 03:37:38,215 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 608 selfloop transitions, 40 changer transitions 0/653 dead transitions. [2024-06-28 03:37:38,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 653 transitions, 10091 flow [2024-06-28 03:37:38,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:37:38,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:37:38,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-28 03:37:38,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4225 [2024-06-28 03:37:38,216 INFO L175 Difference]: Start difference. First operand has 332 places, 620 transitions, 8510 flow. Second operand 10 states and 169 transitions. [2024-06-28 03:37:38,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 653 transitions, 10091 flow [2024-06-28 03:37:39,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 653 transitions, 9697 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 03:37:39,874 INFO L231 Difference]: Finished difference. Result has 339 places, 632 transitions, 8481 flow [2024-06-28 03:37:39,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8120, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=620, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=581, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8481, PETRI_PLACES=339, PETRI_TRANSITIONS=632} [2024-06-28 03:37:39,875 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 298 predicate places. [2024-06-28 03:37:39,875 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 632 transitions, 8481 flow [2024-06-28 03:37:39,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:39,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:39,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:39,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 03:37:39,875 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)] === [2024-06-28 03:37:39,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:39,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1822348016, now seen corresponding path program 1 times [2024-06-28 03:37:39,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:39,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228138634] [2024-06-28 03:37:39,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:39,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:39,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:40,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:40,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:40,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228138634] [2024-06-28 03:37:40,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228138634] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:40,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:40,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:37:40,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237686938] [2024-06-28 03:37:40,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:40,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:37:40,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:40,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:37:40,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:37:40,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 40 [2024-06-28 03:37:40,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 632 transitions, 8481 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:40,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:40,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 40 [2024-06-28 03:37:40,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:41,788 INFO L124 PetriNetUnfolderBase]: 2682/4376 cut-off events. [2024-06-28 03:37:41,788 INFO L125 PetriNetUnfolderBase]: For 426632/426632 co-relation queries the response was YES. [2024-06-28 03:37:41,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40628 conditions, 4376 events. 2682/4376 cut-off events. For 426632/426632 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 26512 event pairs, 424 based on Foata normal form. 4/4349 useless extension candidates. Maximal degree in co-relation 40462. Up to 3790 conditions per place. [2024-06-28 03:37:41,965 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 572 selfloop transitions, 19 changer transitions 0/655 dead transitions. [2024-06-28 03:37:41,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 655 transitions, 9775 flow [2024-06-28 03:37:41,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:37:41,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:37:41,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-28 03:37:41,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.459375 [2024-06-28 03:37:41,967 INFO L175 Difference]: Start difference. First operand has 339 places, 632 transitions, 8481 flow. Second operand 8 states and 147 transitions. [2024-06-28 03:37:41,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 655 transitions, 9775 flow [2024-06-28 03:37:43,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 655 transitions, 9571 flow, removed 61 selfloop flow, removed 7 redundant places. [2024-06-28 03:37:43,410 INFO L231 Difference]: Finished difference. Result has 340 places, 634 transitions, 8366 flow [2024-06-28 03:37:43,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8277, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=632, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=613, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8366, PETRI_PLACES=340, PETRI_TRANSITIONS=634} [2024-06-28 03:37:43,410 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 299 predicate places. [2024-06-28 03:37:43,410 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 634 transitions, 8366 flow [2024-06-28 03:37:43,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:43,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:43,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:43,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 03:37:43,411 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)] === [2024-06-28 03:37:43,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:43,412 INFO L85 PathProgramCache]: Analyzing trace with hash -872390554, now seen corresponding path program 2 times [2024-06-28 03:37:43,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:43,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515616454] [2024-06-28 03:37:43,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:43,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:43,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:44,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:44,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:44,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515616454] [2024-06-28 03:37:44,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515616454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:44,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:44,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:37:44,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56101094] [2024-06-28 03:37:44,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:44,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:37:44,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:44,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:37:44,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:37:44,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 40 [2024-06-28 03:37:44,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 634 transitions, 8366 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:44,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:44,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 40 [2024-06-28 03:37:44,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:45,374 INFO L124 PetriNetUnfolderBase]: 2696/4398 cut-off events. [2024-06-28 03:37:45,374 INFO L125 PetriNetUnfolderBase]: For 432793/432793 co-relation queries the response was YES. [2024-06-28 03:37:45,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40763 conditions, 4398 events. 2696/4398 cut-off events. For 432793/432793 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 26721 event pairs, 455 based on Foata normal form. 4/4371 useless extension candidates. Maximal degree in co-relation 40596. Up to 3821 conditions per place. [2024-06-28 03:37:45,439 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 567 selfloop transitions, 22 changer transitions 0/653 dead transitions. [2024-06-28 03:37:45,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 653 transitions, 9646 flow [2024-06-28 03:37:45,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:37:45,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:37:45,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-28 03:37:45,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-28 03:37:45,441 INFO L175 Difference]: Start difference. First operand has 340 places, 634 transitions, 8366 flow. Second operand 8 states and 144 transitions. [2024-06-28 03:37:45,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 653 transitions, 9646 flow [2024-06-28 03:37:47,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 653 transitions, 9573 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-28 03:37:47,132 INFO L231 Difference]: Finished difference. Result has 342 places, 636 transitions, 8393 flow [2024-06-28 03:37:47,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8293, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=634, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=612, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8393, PETRI_PLACES=342, PETRI_TRANSITIONS=636} [2024-06-28 03:37:47,132 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 301 predicate places. [2024-06-28 03:37:47,132 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 636 transitions, 8393 flow [2024-06-28 03:37:47,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:47,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:47,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:47,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 03:37:47,133 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)] === [2024-06-28 03:37:47,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:47,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1819486096, now seen corresponding path program 1 times [2024-06-28 03:37:47,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:47,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132062166] [2024-06-28 03:37:47,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:47,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:47,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:48,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:48,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:48,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132062166] [2024-06-28 03:37:48,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132062166] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:48,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:48,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:37:48,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518504157] [2024-06-28 03:37:48,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:48,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:37:48,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:48,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:37:48,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:37:48,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:37:48,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 636 transitions, 8393 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:48,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:48,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:37:48,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:49,318 INFO L124 PetriNetUnfolderBase]: 2865/4587 cut-off events. [2024-06-28 03:37:49,319 INFO L125 PetriNetUnfolderBase]: For 429840/429840 co-relation queries the response was YES. [2024-06-28 03:37:49,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42030 conditions, 4587 events. 2865/4587 cut-off events. For 429840/429840 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 27146 event pairs, 506 based on Foata normal form. 1/4587 useless extension candidates. Maximal degree in co-relation 41862. Up to 4244 conditions per place. [2024-06-28 03:37:49,387 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 627 selfloop transitions, 24 changer transitions 0/656 dead transitions. [2024-06-28 03:37:49,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 656 transitions, 9839 flow [2024-06-28 03:37:49,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:37:49,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:37:49,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-28 03:37:49,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41944444444444445 [2024-06-28 03:37:49,388 INFO L175 Difference]: Start difference. First operand has 342 places, 636 transitions, 8393 flow. Second operand 9 states and 151 transitions. [2024-06-28 03:37:49,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 656 transitions, 9839 flow [2024-06-28 03:37:50,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 656 transitions, 9757 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-28 03:37:50,845 INFO L231 Difference]: Finished difference. Result has 345 places, 639 transitions, 8459 flow [2024-06-28 03:37:50,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8311, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=636, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=612, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8459, PETRI_PLACES=345, PETRI_TRANSITIONS=639} [2024-06-28 03:37:50,846 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 304 predicate places. [2024-06-28 03:37:50,846 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 639 transitions, 8459 flow [2024-06-28 03:37:50,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:50,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:50,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:50,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 03:37:50,846 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)] === [2024-06-28 03:37:50,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:50,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1704199886, now seen corresponding path program 3 times [2024-06-28 03:37:50,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:50,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78529668] [2024-06-28 03:37:50,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:50,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:50,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:51,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:51,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:51,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78529668] [2024-06-28 03:37:51,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78529668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:51,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:51,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:37:51,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123745138] [2024-06-28 03:37:51,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:51,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:37:51,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:51,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:37:51,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:37:51,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 40 [2024-06-28 03:37:51,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 639 transitions, 8459 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:51,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:51,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 40 [2024-06-28 03:37:51,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:52,889 INFO L124 PetriNetUnfolderBase]: 2715/4429 cut-off events. [2024-06-28 03:37:52,890 INFO L125 PetriNetUnfolderBase]: For 452597/452597 co-relation queries the response was YES. [2024-06-28 03:37:52,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41440 conditions, 4429 events. 2715/4429 cut-off events. For 452597/452597 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 26944 event pairs, 454 based on Foata normal form. 4/4402 useless extension candidates. Maximal degree in co-relation 41271. Up to 3852 conditions per place. [2024-06-28 03:37:52,960 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 567 selfloop transitions, 24 changer transitions 0/655 dead transitions. [2024-06-28 03:37:52,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 655 transitions, 9737 flow [2024-06-28 03:37:52,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:37:52,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:37:52,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-28 03:37:52,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.440625 [2024-06-28 03:37:52,961 INFO L175 Difference]: Start difference. First operand has 345 places, 639 transitions, 8459 flow. Second operand 8 states and 141 transitions. [2024-06-28 03:37:52,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 655 transitions, 9737 flow [2024-06-28 03:37:54,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 655 transitions, 9569 flow, removed 46 selfloop flow, removed 8 redundant places. [2024-06-28 03:37:54,910 INFO L231 Difference]: Finished difference. Result has 345 places, 641 transitions, 8401 flow [2024-06-28 03:37:54,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8291, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=639, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=615, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8401, PETRI_PLACES=345, PETRI_TRANSITIONS=641} [2024-06-28 03:37:54,911 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 304 predicate places. [2024-06-28 03:37:54,911 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 641 transitions, 8401 flow [2024-06-28 03:37:54,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:54,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:54,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:54,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 03:37:54,911 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)] === [2024-06-28 03:37:54,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:54,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1704015436, now seen corresponding path program 2 times [2024-06-28 03:37:54,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:54,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990868088] [2024-06-28 03:37:54,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:54,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:54,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:55,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:55,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:55,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990868088] [2024-06-28 03:37:55,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990868088] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:55,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:55,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:37:55,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908425130] [2024-06-28 03:37:55,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:55,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:37:55,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:55,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:37:55,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:37:55,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:37:55,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 641 transitions, 8401 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:55,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:55,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:37:55,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:56,996 INFO L124 PetriNetUnfolderBase]: 2894/4625 cut-off events. [2024-06-28 03:37:56,996 INFO L125 PetriNetUnfolderBase]: For 452572/452572 co-relation queries the response was YES. [2024-06-28 03:37:57,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42884 conditions, 4625 events. 2894/4625 cut-off events. For 452572/452572 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 27351 event pairs, 508 based on Foata normal form. 1/4625 useless extension candidates. Maximal degree in co-relation 42715. Up to 4260 conditions per place. [2024-06-28 03:37:57,068 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 617 selfloop transitions, 41 changer transitions 0/663 dead transitions. [2024-06-28 03:37:57,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 663 transitions, 10102 flow [2024-06-28 03:37:57,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:37:57,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:37:57,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 03:37:57,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-28 03:37:57,070 INFO L175 Difference]: Start difference. First operand has 345 places, 641 transitions, 8401 flow. Second operand 9 states and 153 transitions. [2024-06-28 03:37:57,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 663 transitions, 10102 flow [2024-06-28 03:37:58,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 663 transitions, 10009 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-28 03:37:58,948 INFO L231 Difference]: Finished difference. Result has 349 places, 647 transitions, 8579 flow [2024-06-28 03:37:58,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8308, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=641, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=600, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8579, PETRI_PLACES=349, PETRI_TRANSITIONS=647} [2024-06-28 03:37:58,949 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 308 predicate places. [2024-06-28 03:37:58,949 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 647 transitions, 8579 flow [2024-06-28 03:37:58,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:58,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:58,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:58,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 03:37:58,950 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)] === [2024-06-28 03:37:58,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:58,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1704194926, now seen corresponding path program 3 times [2024-06-28 03:37:58,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:58,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72859756] [2024-06-28 03:37:58,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:58,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:58,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:59,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:59,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:59,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72859756] [2024-06-28 03:37:59,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72859756] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:59,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:59,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:37:59,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223965401] [2024-06-28 03:37:59,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:59,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:37:59,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:59,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:37:59,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:38:00,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:38:00,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 647 transitions, 8579 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:00,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:00,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:38:00,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:01,260 INFO L124 PetriNetUnfolderBase]: 2904/4643 cut-off events. [2024-06-28 03:38:01,260 INFO L125 PetriNetUnfolderBase]: For 462864/462864 co-relation queries the response was YES. [2024-06-28 03:38:01,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43274 conditions, 4643 events. 2904/4643 cut-off events. For 462864/462864 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 27497 event pairs, 506 based on Foata normal form. 1/4643 useless extension candidates. Maximal degree in co-relation 43104. Up to 4301 conditions per place. [2024-06-28 03:38:01,331 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 633 selfloop transitions, 29 changer transitions 0/667 dead transitions. [2024-06-28 03:38:01,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 667 transitions, 10053 flow [2024-06-28 03:38:01,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:38:01,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:38:01,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-28 03:38:01,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 03:38:01,332 INFO L175 Difference]: Start difference. First operand has 349 places, 647 transitions, 8579 flow. Second operand 9 states and 150 transitions. [2024-06-28 03:38:01,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 667 transitions, 10053 flow [2024-06-28 03:38:03,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 667 transitions, 9889 flow, removed 45 selfloop flow, removed 6 redundant places. [2024-06-28 03:38:03,326 INFO L231 Difference]: Finished difference. Result has 352 places, 653 transitions, 8591 flow [2024-06-28 03:38:03,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8423, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=647, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=621, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8591, PETRI_PLACES=352, PETRI_TRANSITIONS=653} [2024-06-28 03:38:03,327 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 311 predicate places. [2024-06-28 03:38:03,327 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 653 transitions, 8591 flow [2024-06-28 03:38:03,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:03,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:03,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:03,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 03:38:03,328 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)] === [2024-06-28 03:38:03,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:03,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1704015188, now seen corresponding path program 1 times [2024-06-28 03:38:03,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:03,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500050853] [2024-06-28 03:38:03,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:03,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:03,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:04,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:04,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:04,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500050853] [2024-06-28 03:38:04,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500050853] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:04,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:04,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:38:04,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380948705] [2024-06-28 03:38:04,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:04,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:38:04,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:04,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:38:04,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:38:04,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:38:04,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 653 transitions, 8591 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:04,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:04,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:38:04,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:05,709 INFO L124 PetriNetUnfolderBase]: 2912/4655 cut-off events. [2024-06-28 03:38:05,709 INFO L125 PetriNetUnfolderBase]: For 476162/476162 co-relation queries the response was YES. [2024-06-28 03:38:05,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43409 conditions, 4655 events. 2912/4655 cut-off events. For 476162/476162 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 27550 event pairs, 508 based on Foata normal form. 2/4656 useless extension candidates. Maximal degree in co-relation 43238. Up to 4316 conditions per place. [2024-06-28 03:38:05,780 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 642 selfloop transitions, 23 changer transitions 0/670 dead transitions. [2024-06-28 03:38:05,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 670 transitions, 10025 flow [2024-06-28 03:38:05,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:38:05,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:38:05,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-28 03:38:05,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4111111111111111 [2024-06-28 03:38:05,781 INFO L175 Difference]: Start difference. First operand has 352 places, 653 transitions, 8591 flow. Second operand 9 states and 148 transitions. [2024-06-28 03:38:05,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 670 transitions, 10025 flow [2024-06-28 03:38:07,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 670 transitions, 9920 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-28 03:38:07,409 INFO L231 Difference]: Finished difference. Result has 354 places, 655 transitions, 8599 flow [2024-06-28 03:38:07,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8486, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=653, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=630, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8599, PETRI_PLACES=354, PETRI_TRANSITIONS=655} [2024-06-28 03:38:07,409 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 313 predicate places. [2024-06-28 03:38:07,410 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 655 transitions, 8599 flow [2024-06-28 03:38:07,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:07,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:07,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:07,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 03:38:07,410 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)] === [2024-06-28 03:38:07,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:07,411 INFO L85 PathProgramCache]: Analyzing trace with hash 788320884, now seen corresponding path program 4 times [2024-06-28 03:38:07,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:07,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302505665] [2024-06-28 03:38:07,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:07,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:07,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:08,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:08,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:08,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302505665] [2024-06-28 03:38:08,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302505665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:08,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:08,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:38:08,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128351879] [2024-06-28 03:38:08,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:08,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:38:08,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:08,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:38:08,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:38:08,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:38:08,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 655 transitions, 8599 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:08,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:08,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:38:08,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:09,881 INFO L124 PetriNetUnfolderBase]: 2909/4645 cut-off events. [2024-06-28 03:38:09,882 INFO L125 PetriNetUnfolderBase]: For 478479/478479 co-relation queries the response was YES. [2024-06-28 03:38:09,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43455 conditions, 4645 events. 2909/4645 cut-off events. For 478479/478479 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 27420 event pairs, 508 based on Foata normal form. 1/4645 useless extension candidates. Maximal degree in co-relation 43284. Up to 4291 conditions per place. [2024-06-28 03:38:09,951 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 629 selfloop transitions, 36 changer transitions 0/670 dead transitions. [2024-06-28 03:38:09,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 670 transitions, 9979 flow [2024-06-28 03:38:09,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:38:09,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:38:09,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-28 03:38:09,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41944444444444445 [2024-06-28 03:38:09,953 INFO L175 Difference]: Start difference. First operand has 354 places, 655 transitions, 8599 flow. Second operand 9 states and 151 transitions. [2024-06-28 03:38:09,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 670 transitions, 9979 flow [2024-06-28 03:38:11,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 670 transitions, 9842 flow, removed 47 selfloop flow, removed 7 redundant places. [2024-06-28 03:38:11,581 INFO L231 Difference]: Finished difference. Result has 356 places, 655 transitions, 8540 flow [2024-06-28 03:38:11,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8462, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=655, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=619, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8540, PETRI_PLACES=356, PETRI_TRANSITIONS=655} [2024-06-28 03:38:11,581 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 315 predicate places. [2024-06-28 03:38:11,581 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 655 transitions, 8540 flow [2024-06-28 03:38:11,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:11,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:11,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:11,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 03:38:11,582 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)] === [2024-06-28 03:38:11,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:11,582 INFO L85 PathProgramCache]: Analyzing trace with hash -867435386, now seen corresponding path program 4 times [2024-06-28 03:38:11,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:11,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938299643] [2024-06-28 03:38:11,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:11,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:11,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:12,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:12,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:12,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938299643] [2024-06-28 03:38:12,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938299643] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:12,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:12,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:38:12,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570105293] [2024-06-28 03:38:12,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:12,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:38:12,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:12,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:38:12,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:38:12,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 40 [2024-06-28 03:38:12,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 655 transitions, 8540 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:12,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:12,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 40 [2024-06-28 03:38:12,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:13,950 INFO L124 PetriNetUnfolderBase]: 2733/4455 cut-off events. [2024-06-28 03:38:13,950 INFO L125 PetriNetUnfolderBase]: For 484460/484462 co-relation queries the response was YES. [2024-06-28 03:38:13,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41904 conditions, 4455 events. 2733/4455 cut-off events. For 484460/484462 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 27111 event pairs, 453 based on Foata normal form. 6/4430 useless extension candidates. Maximal degree in co-relation 41732. Up to 3860 conditions per place. [2024-06-28 03:38:14,013 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 560 selfloop transitions, 45 changer transitions 0/669 dead transitions. [2024-06-28 03:38:14,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 669 transitions, 9848 flow [2024-06-28 03:38:14,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:38:14,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:38:14,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 03:38:14,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-28 03:38:14,014 INFO L175 Difference]: Start difference. First operand has 356 places, 655 transitions, 8540 flow. Second operand 9 states and 153 transitions. [2024-06-28 03:38:14,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 669 transitions, 9848 flow [2024-06-28 03:38:16,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 669 transitions, 9748 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 03:38:16,131 INFO L231 Difference]: Finished difference. Result has 357 places, 657 transitions, 8601 flow [2024-06-28 03:38:16,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8440, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=655, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=610, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8601, PETRI_PLACES=357, PETRI_TRANSITIONS=657} [2024-06-28 03:38:16,132 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 316 predicate places. [2024-06-28 03:38:16,132 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 657 transitions, 8601 flow [2024-06-28 03:38:16,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:16,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:16,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:16,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 03:38:16,133 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)] === [2024-06-28 03:38:16,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:16,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1251826100, now seen corresponding path program 5 times [2024-06-28 03:38:16,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:16,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553888949] [2024-06-28 03:38:16,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:16,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:16,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:17,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:17,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:17,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553888949] [2024-06-28 03:38:17,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553888949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:17,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:17,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:38:17,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778338882] [2024-06-28 03:38:17,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:17,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:38:17,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:17,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:38:17,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:38:17,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:38:17,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 657 transitions, 8601 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:17,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:17,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:38:17,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:18,416 INFO L124 PetriNetUnfolderBase]: 2909/4649 cut-off events. [2024-06-28 03:38:18,417 INFO L125 PetriNetUnfolderBase]: For 484982/484982 co-relation queries the response was YES. [2024-06-28 03:38:18,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43294 conditions, 4649 events. 2909/4649 cut-off events. For 484982/484982 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 27518 event pairs, 511 based on Foata normal form. 1/4648 useless extension candidates. Maximal degree in co-relation 43121. Up to 4225 conditions per place. [2024-06-28 03:38:18,479 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 591 selfloop transitions, 84 changer transitions 0/680 dead transitions. [2024-06-28 03:38:18,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 680 transitions, 10415 flow [2024-06-28 03:38:18,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:38:18,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:38:18,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-28 03:38:18,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42777777777777776 [2024-06-28 03:38:18,480 INFO L175 Difference]: Start difference. First operand has 357 places, 657 transitions, 8601 flow. Second operand 9 states and 154 transitions. [2024-06-28 03:38:18,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 680 transitions, 10415 flow [2024-06-28 03:38:20,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 680 transitions, 10262 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-28 03:38:20,227 INFO L231 Difference]: Finished difference. Result has 361 places, 666 transitions, 8866 flow [2024-06-28 03:38:20,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8449, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=657, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=578, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8866, PETRI_PLACES=361, PETRI_TRANSITIONS=666} [2024-06-28 03:38:20,227 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 320 predicate places. [2024-06-28 03:38:20,228 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 666 transitions, 8866 flow [2024-06-28 03:38:20,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:20,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:20,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:20,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 03:38:20,228 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)] === [2024-06-28 03:38:20,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:20,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1021906850, now seen corresponding path program 6 times [2024-06-28 03:38:20,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:20,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365638323] [2024-06-28 03:38:20,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:20,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:20,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:21,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:21,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:21,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365638323] [2024-06-28 03:38:21,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365638323] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:21,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:21,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:38:21,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334846021] [2024-06-28 03:38:21,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:21,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:38:21,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:21,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:38:21,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:38:21,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:38:21,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 666 transitions, 8866 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:21,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:21,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:38:21,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:22,574 INFO L124 PetriNetUnfolderBase]: 2914/4664 cut-off events. [2024-06-28 03:38:22,574 INFO L125 PetriNetUnfolderBase]: For 496653/496655 co-relation queries the response was YES. [2024-06-28 03:38:22,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43572 conditions, 4664 events. 2914/4664 cut-off events. For 496653/496655 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 27724 event pairs, 505 based on Foata normal form. 3/4666 useless extension candidates. Maximal degree in co-relation 43398. Up to 4284 conditions per place. [2024-06-28 03:38:22,638 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 626 selfloop transitions, 52 changer transitions 0/683 dead transitions. [2024-06-28 03:38:22,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 683 transitions, 10382 flow [2024-06-28 03:38:22,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:38:22,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:38:22,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-28 03:38:22,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-28 03:38:22,640 INFO L175 Difference]: Start difference. First operand has 361 places, 666 transitions, 8866 flow. Second operand 10 states and 165 transitions. [2024-06-28 03:38:22,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 683 transitions, 10382 flow [2024-06-28 03:38:24,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 683 transitions, 10178 flow, removed 66 selfloop flow, removed 5 redundant places. [2024-06-28 03:38:24,735 INFO L231 Difference]: Finished difference. Result has 367 places, 670 transitions, 8904 flow [2024-06-28 03:38:24,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8674, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=666, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=614, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8904, PETRI_PLACES=367, PETRI_TRANSITIONS=670} [2024-06-28 03:38:24,736 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 326 predicate places. [2024-06-28 03:38:24,736 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 670 transitions, 8904 flow [2024-06-28 03:38:24,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:24,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:24,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:24,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 03:38:24,737 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)] === [2024-06-28 03:38:24,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:24,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1532119944, now seen corresponding path program 2 times [2024-06-28 03:38:24,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:24,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305079030] [2024-06-28 03:38:24,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:24,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:24,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:25,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:25,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:25,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305079030] [2024-06-28 03:38:25,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305079030] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:25,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:25,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:38:25,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548947552] [2024-06-28 03:38:25,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:25,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:38:25,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:25,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:38:25,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:38:25,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:38:25,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 670 transitions, 8904 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:25,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:25,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:38:25,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:26,931 INFO L124 PetriNetUnfolderBase]: 2922/4674 cut-off events. [2024-06-28 03:38:26,932 INFO L125 PetriNetUnfolderBase]: For 506989/506991 co-relation queries the response was YES. [2024-06-28 03:38:26,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43527 conditions, 4674 events. 2922/4674 cut-off events. For 506989/506991 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 27782 event pairs, 509 based on Foata normal form. 4/4677 useless extension candidates. Maximal degree in co-relation 43351. Up to 4316 conditions per place. [2024-06-28 03:38:27,004 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 646 selfloop transitions, 36 changer transitions 0/687 dead transitions. [2024-06-28 03:38:27,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 687 transitions, 10391 flow [2024-06-28 03:38:27,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:38:27,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:38:27,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-28 03:38:27,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4111111111111111 [2024-06-28 03:38:27,005 INFO L175 Difference]: Start difference. First operand has 367 places, 670 transitions, 8904 flow. Second operand 9 states and 148 transitions. [2024-06-28 03:38:27,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 687 transitions, 10391 flow [2024-06-28 03:38:28,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 687 transitions, 10187 flow, removed 47 selfloop flow, removed 8 redundant places. [2024-06-28 03:38:28,884 INFO L231 Difference]: Finished difference. Result has 369 places, 674 transitions, 8872 flow [2024-06-28 03:38:28,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8704, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=670, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=634, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8872, PETRI_PLACES=369, PETRI_TRANSITIONS=674} [2024-06-28 03:38:28,885 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 328 predicate places. [2024-06-28 03:38:28,885 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 674 transitions, 8872 flow [2024-06-28 03:38:28,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:28,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:28,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:28,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 03:38:28,886 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)] === [2024-06-28 03:38:28,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:28,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1251834718, now seen corresponding path program 3 times [2024-06-28 03:38:28,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:28,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196123201] [2024-06-28 03:38:28,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:28,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:28,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:29,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:29,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:29,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196123201] [2024-06-28 03:38:29,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196123201] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:29,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:29,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:38:29,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441569238] [2024-06-28 03:38:29,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:29,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:38:29,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:29,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:38:29,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:38:29,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:38:29,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 674 transitions, 8872 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:29,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:29,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:38:29,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:31,196 INFO L124 PetriNetUnfolderBase]: 2992/4780 cut-off events. [2024-06-28 03:38:31,196 INFO L125 PetriNetUnfolderBase]: For 555624/555626 co-relation queries the response was YES. [2024-06-28 03:38:31,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45369 conditions, 4780 events. 2992/4780 cut-off events. For 555624/555626 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 28455 event pairs, 523 based on Foata normal form. 4/4783 useless extension candidates. Maximal degree in co-relation 45192. Up to 4258 conditions per place. [2024-06-28 03:38:31,273 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 615 selfloop transitions, 81 changer transitions 0/701 dead transitions. [2024-06-28 03:38:31,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 701 transitions, 10908 flow [2024-06-28 03:38:31,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:38:31,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:38:31,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-28 03:38:31,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-06-28 03:38:31,274 INFO L175 Difference]: Start difference. First operand has 369 places, 674 transitions, 8872 flow. Second operand 9 states and 159 transitions. [2024-06-28 03:38:31,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 701 transitions, 10908 flow [2024-06-28 03:38:33,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 701 transitions, 10790 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-28 03:38:33,357 INFO L231 Difference]: Finished difference. Result has 373 places, 680 transitions, 9096 flow [2024-06-28 03:38:33,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8754, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=674, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=595, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9096, PETRI_PLACES=373, PETRI_TRANSITIONS=680} [2024-06-28 03:38:33,358 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 332 predicate places. [2024-06-28 03:38:33,358 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 680 transitions, 9096 flow [2024-06-28 03:38:33,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:33,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:33,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:33,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 03:38:33,358 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)] === [2024-06-28 03:38:33,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:33,359 INFO L85 PathProgramCache]: Analyzing trace with hash 953787038, now seen corresponding path program 7 times [2024-06-28 03:38:33,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:33,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178885516] [2024-06-28 03:38:33,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:33,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:33,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:34,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:34,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:34,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178885516] [2024-06-28 03:38:34,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178885516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:34,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:34,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:38:34,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980613840] [2024-06-28 03:38:34,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:34,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:38:34,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:34,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:38:34,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:38:34,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:38:34,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 680 transitions, 9096 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:34,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:34,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:38:34,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:35,664 INFO L124 PetriNetUnfolderBase]: 3002/4796 cut-off events. [2024-06-28 03:38:35,664 INFO L125 PetriNetUnfolderBase]: For 563650/563652 co-relation queries the response was YES. [2024-06-28 03:38:35,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45846 conditions, 4796 events. 3002/4796 cut-off events. For 563650/563652 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 28591 event pairs, 527 based on Foata normal form. 3/4798 useless extension candidates. Maximal degree in co-relation 45668. Up to 4421 conditions per place. [2024-06-28 03:38:35,739 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 643 selfloop transitions, 50 changer transitions 0/698 dead transitions. [2024-06-28 03:38:35,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 698 transitions, 10640 flow [2024-06-28 03:38:35,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:38:35,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:38:35,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-28 03:38:35,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41944444444444445 [2024-06-28 03:38:35,741 INFO L175 Difference]: Start difference. First operand has 373 places, 680 transitions, 9096 flow. Second operand 9 states and 151 transitions. [2024-06-28 03:38:35,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 698 transitions, 10640 flow [2024-06-28 03:38:38,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 698 transitions, 10399 flow, removed 40 selfloop flow, removed 8 redundant places. [2024-06-28 03:38:38,237 INFO L231 Difference]: Finished difference. Result has 374 places, 686 transitions, 9087 flow [2024-06-28 03:38:38,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8866, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=680, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=633, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9087, PETRI_PLACES=374, PETRI_TRANSITIONS=686} [2024-06-28 03:38:38,238 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 333 predicate places. [2024-06-28 03:38:38,238 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 686 transitions, 9087 flow [2024-06-28 03:38:38,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:38,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:38,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:38,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 03:38:38,239 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)] === [2024-06-28 03:38:38,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:38,239 INFO L85 PathProgramCache]: Analyzing trace with hash 628659812, now seen corresponding path program 4 times [2024-06-28 03:38:38,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:38,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582310398] [2024-06-28 03:38:38,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:38,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:38,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:39,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:39,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:39,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582310398] [2024-06-28 03:38:39,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582310398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:39,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:39,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:38:39,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124183649] [2024-06-28 03:38:39,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:39,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:38:39,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:39,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:38:39,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:38:39,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:38:39,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 686 transitions, 9087 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:39,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:39,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:38:39,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:40,560 INFO L124 PetriNetUnfolderBase]: 3046/4864 cut-off events. [2024-06-28 03:38:40,560 INFO L125 PetriNetUnfolderBase]: For 614582/614584 co-relation queries the response was YES. [2024-06-28 03:38:40,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46222 conditions, 4864 events. 3046/4864 cut-off events. For 614582/614584 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 29047 event pairs, 531 based on Foata normal form. 12/4875 useless extension candidates. Maximal degree in co-relation 46045. Up to 4407 conditions per place. [2024-06-28 03:38:40,640 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 621 selfloop transitions, 82 changer transitions 0/708 dead transitions. [2024-06-28 03:38:40,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 708 transitions, 10872 flow [2024-06-28 03:38:40,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:38:40,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:38:40,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-28 03:38:40,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4325 [2024-06-28 03:38:40,641 INFO L175 Difference]: Start difference. First operand has 374 places, 686 transitions, 9087 flow. Second operand 10 states and 173 transitions. [2024-06-28 03:38:40,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 708 transitions, 10872 flow [2024-06-28 03:38:42,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 708 transitions, 10716 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-28 03:38:42,652 INFO L231 Difference]: Finished difference. Result has 377 places, 689 transitions, 9180 flow [2024-06-28 03:38:42,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8931, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=686, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=604, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9180, PETRI_PLACES=377, PETRI_TRANSITIONS=689} [2024-06-28 03:38:42,653 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 336 predicate places. [2024-06-28 03:38:42,653 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 689 transitions, 9180 flow [2024-06-28 03:38:42,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:42,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:42,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:42,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 03:38:42,654 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)] === [2024-06-28 03:38:42,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:42,654 INFO L85 PathProgramCache]: Analyzing trace with hash -867257446, now seen corresponding path program 8 times [2024-06-28 03:38:42,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:42,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018947050] [2024-06-28 03:38:42,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:42,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:42,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:43,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:43,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:43,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018947050] [2024-06-28 03:38:43,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018947050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:43,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:43,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:38:43,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214849206] [2024-06-28 03:38:43,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:43,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:38:43,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:43,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:38:43,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:38:43,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:38:43,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 689 transitions, 9180 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:43,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:43,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:38:43,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:45,110 INFO L124 PetriNetUnfolderBase]: 3043/4860 cut-off events. [2024-06-28 03:38:45,110 INFO L125 PetriNetUnfolderBase]: For 580504/580504 co-relation queries the response was YES. [2024-06-28 03:38:45,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46291 conditions, 4860 events. 3043/4860 cut-off events. For 580504/580504 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 29046 event pairs, 535 based on Foata normal form. 1/4859 useless extension candidates. Maximal degree in co-relation 46114. Up to 4467 conditions per place. [2024-06-28 03:38:45,189 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 641 selfloop transitions, 55 changer transitions 0/701 dead transitions. [2024-06-28 03:38:45,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 701 transitions, 10610 flow [2024-06-28 03:38:45,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:38:45,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:38:45,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 03:38:45,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-28 03:38:45,191 INFO L175 Difference]: Start difference. First operand has 377 places, 689 transitions, 9180 flow. Second operand 9 states and 153 transitions. [2024-06-28 03:38:45,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 701 transitions, 10610 flow [2024-06-28 03:38:47,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 701 transitions, 10402 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-28 03:38:47,347 INFO L231 Difference]: Finished difference. Result has 378 places, 689 transitions, 9088 flow [2024-06-28 03:38:47,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8972, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=689, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=634, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9088, PETRI_PLACES=378, PETRI_TRANSITIONS=689} [2024-06-28 03:38:47,348 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 337 predicate places. [2024-06-28 03:38:47,348 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 689 transitions, 9088 flow [2024-06-28 03:38:47,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:47,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:47,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:47,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 03:38:47,349 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)] === [2024-06-28 03:38:47,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:47,349 INFO L85 PathProgramCache]: Analyzing trace with hash -867250936, now seen corresponding path program 9 times [2024-06-28 03:38:47,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:47,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251759261] [2024-06-28 03:38:47,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:47,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:47,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:48,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:48,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:48,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251759261] [2024-06-28 03:38:48,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251759261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:48,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:48,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:38:48,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174062236] [2024-06-28 03:38:48,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:48,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:38:48,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:48,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:38:48,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:38:48,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:38:48,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 689 transitions, 9088 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:48,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:48,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:38:48,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:49,521 INFO L124 PetriNetUnfolderBase]: 3040/4852 cut-off events. [2024-06-28 03:38:49,522 INFO L125 PetriNetUnfolderBase]: For 583513/583513 co-relation queries the response was YES. [2024-06-28 03:38:49,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45975 conditions, 4852 events. 3040/4852 cut-off events. For 583513/583513 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 28934 event pairs, 533 based on Foata normal form. 1/4851 useless extension candidates. Maximal degree in co-relation 45797. Up to 4454 conditions per place. [2024-06-28 03:38:49,602 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 633 selfloop transitions, 63 changer transitions 0/701 dead transitions. [2024-06-28 03:38:49,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 701 transitions, 10518 flow [2024-06-28 03:38:49,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:38:49,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:38:49,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-28 03:38:49,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42777777777777776 [2024-06-28 03:38:49,604 INFO L175 Difference]: Start difference. First operand has 378 places, 689 transitions, 9088 flow. Second operand 9 states and 154 transitions. [2024-06-28 03:38:49,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 701 transitions, 10518 flow [2024-06-28 03:38:51,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 701 transitions, 10280 flow, removed 41 selfloop flow, removed 9 redundant places. [2024-06-28 03:38:51,532 INFO L231 Difference]: Finished difference. Result has 378 places, 689 transitions, 8982 flow [2024-06-28 03:38:51,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8850, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=689, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=626, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8982, PETRI_PLACES=378, PETRI_TRANSITIONS=689} [2024-06-28 03:38:51,533 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 337 predicate places. [2024-06-28 03:38:51,533 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 689 transitions, 8982 flow [2024-06-28 03:38:51,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:51,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:51,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:51,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 03:38:51,533 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)] === [2024-06-28 03:38:51,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:51,534 INFO L85 PathProgramCache]: Analyzing trace with hash -867250688, now seen corresponding path program 5 times [2024-06-28 03:38:51,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:51,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898704043] [2024-06-28 03:38:51,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:51,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:51,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:52,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:52,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:52,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898704043] [2024-06-28 03:38:52,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898704043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:52,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:52,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:38:52,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899612326] [2024-06-28 03:38:52,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:52,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:38:52,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:52,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:38:52,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:38:52,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:38:52,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 689 transitions, 8982 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:52,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:52,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:38:52,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:53,830 INFO L124 PetriNetUnfolderBase]: 3035/4851 cut-off events. [2024-06-28 03:38:53,831 INFO L125 PetriNetUnfolderBase]: For 588206/588208 co-relation queries the response was YES. [2024-06-28 03:38:53,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45716 conditions, 4851 events. 3035/4851 cut-off events. For 588206/588208 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 28965 event pairs, 528 based on Foata normal form. 4/4854 useless extension candidates. Maximal degree in co-relation 45538. Up to 4489 conditions per place. [2024-06-28 03:38:53,902 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 663 selfloop transitions, 35 changer transitions 0/703 dead transitions. [2024-06-28 03:38:53,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 703 transitions, 10461 flow [2024-06-28 03:38:53,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:38:53,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:38:53,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-28 03:38:53,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41388888888888886 [2024-06-28 03:38:53,903 INFO L175 Difference]: Start difference. First operand has 378 places, 689 transitions, 8982 flow. Second operand 9 states and 149 transitions. [2024-06-28 03:38:53,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 703 transitions, 10461 flow [2024-06-28 03:38:56,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 703 transitions, 10200 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-28 03:38:56,126 INFO L231 Difference]: Finished difference. Result has 378 places, 690 transitions, 8841 flow [2024-06-28 03:38:56,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8721, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=689, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=654, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8841, PETRI_PLACES=378, PETRI_TRANSITIONS=690} [2024-06-28 03:38:56,127 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 337 predicate places. [2024-06-28 03:38:56,127 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 690 transitions, 8841 flow [2024-06-28 03:38:56,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:56,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:56,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:56,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 03:38:56,127 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)] === [2024-06-28 03:38:56,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:56,128 INFO L85 PathProgramCache]: Analyzing trace with hash -2104758868, now seen corresponding path program 1 times [2024-06-28 03:38:56,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:56,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061790287] [2024-06-28 03:38:56,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:56,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:56,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:56,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:56,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:56,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061790287] [2024-06-28 03:38:56,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061790287] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:56,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:56,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:38:56,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140807708] [2024-06-28 03:38:56,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:56,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:38:56,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:56,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:38:56,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:38:56,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:38:56,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 690 transitions, 8841 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:56,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:56,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:38:56,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:58,232 INFO L124 PetriNetUnfolderBase]: 3051/4873 cut-off events. [2024-06-28 03:38:58,233 INFO L125 PetriNetUnfolderBase]: For 593695/593695 co-relation queries the response was YES. [2024-06-28 03:38:58,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45820 conditions, 4873 events. 3051/4873 cut-off events. For 593695/593695 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 29089 event pairs, 440 based on Foata normal form. 1/4872 useless extension candidates. Maximal degree in co-relation 45642. Up to 4256 conditions per place. [2024-06-28 03:38:58,312 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 646 selfloop transitions, 67 changer transitions 0/718 dead transitions. [2024-06-28 03:38:58,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 718 transitions, 10463 flow [2024-06-28 03:38:58,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:38:58,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:38:58,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-28 03:38:58,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.465625 [2024-06-28 03:38:58,313 INFO L175 Difference]: Start difference. First operand has 378 places, 690 transitions, 8841 flow. Second operand 8 states and 149 transitions. [2024-06-28 03:38:58,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 718 transitions, 10463 flow [2024-06-28 03:39:00,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 718 transitions, 10342 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-28 03:39:00,581 INFO L231 Difference]: Finished difference. Result has 379 places, 696 transitions, 8984 flow [2024-06-28 03:39:00,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8720, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=690, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=626, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8984, PETRI_PLACES=379, PETRI_TRANSITIONS=696} [2024-06-28 03:39:00,582 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 338 predicate places. [2024-06-28 03:39:00,582 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 696 transitions, 8984 flow [2024-06-28 03:39:00,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:00,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:00,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:00,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 03:39:00,583 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)] === [2024-06-28 03:39:00,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:00,583 INFO L85 PathProgramCache]: Analyzing trace with hash -660021864, now seen corresponding path program 2 times [2024-06-28 03:39:00,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:00,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875005192] [2024-06-28 03:39:00,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:00,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:00,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:01,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:01,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:01,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875005192] [2024-06-28 03:39:01,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875005192] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:01,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:01,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:39:01,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404417937] [2024-06-28 03:39:01,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:01,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:39:01,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:01,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:39:01,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:39:01,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:39:01,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 696 transitions, 8984 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:01,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:01,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:39:01,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:02,576 INFO L124 PetriNetUnfolderBase]: 3064/4899 cut-off events. [2024-06-28 03:39:02,576 INFO L125 PetriNetUnfolderBase]: For 613275/613275 co-relation queries the response was YES. [2024-06-28 03:39:02,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46704 conditions, 4899 events. 3064/4899 cut-off events. For 613275/613275 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 29340 event pairs, 440 based on Foata normal form. 1/4898 useless extension candidates. Maximal degree in co-relation 46525. Up to 4256 conditions per place. [2024-06-28 03:39:02,658 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 639 selfloop transitions, 78 changer transitions 0/722 dead transitions. [2024-06-28 03:39:02,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 722 transitions, 10874 flow [2024-06-28 03:39:02,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:39:02,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:39:02,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-28 03:39:02,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4625 [2024-06-28 03:39:02,660 INFO L175 Difference]: Start difference. First operand has 379 places, 696 transitions, 8984 flow. Second operand 8 states and 148 transitions. [2024-06-28 03:39:02,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 722 transitions, 10874 flow [2024-06-28 03:39:05,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 722 transitions, 10668 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-06-28 03:39:05,409 INFO L231 Difference]: Finished difference. Result has 382 places, 702 transitions, 9131 flow [2024-06-28 03:39:05,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8778, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=696, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=621, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9131, PETRI_PLACES=382, PETRI_TRANSITIONS=702} [2024-06-28 03:39:05,410 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 341 predicate places. [2024-06-28 03:39:05,410 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 702 transitions, 9131 flow [2024-06-28 03:39:05,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:05,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:05,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:05,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 03:39:05,411 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)] === [2024-06-28 03:39:05,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:05,411 INFO L85 PathProgramCache]: Analyzing trace with hash -2110121248, now seen corresponding path program 3 times [2024-06-28 03:39:05,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:05,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648630604] [2024-06-28 03:39:05,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:05,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:05,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:06,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:06,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:06,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648630604] [2024-06-28 03:39:06,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648630604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:06,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:06,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:39:06,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906094727] [2024-06-28 03:39:06,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:06,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:39:06,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:06,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:39:06,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:39:06,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:39:06,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 702 transitions, 9131 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:06,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:06,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:39:06,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:07,509 INFO L124 PetriNetUnfolderBase]: 3061/4899 cut-off events. [2024-06-28 03:39:07,509 INFO L125 PetriNetUnfolderBase]: For 622132/622132 co-relation queries the response was YES. [2024-06-28 03:39:07,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46944 conditions, 4899 events. 3061/4899 cut-off events. For 622132/622132 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 29415 event pairs, 448 based on Foata normal form. 1/4898 useless extension candidates. Maximal degree in co-relation 46764. Up to 4270 conditions per place. [2024-06-28 03:39:07,584 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 646 selfloop transitions, 75 changer transitions 0/726 dead transitions. [2024-06-28 03:39:07,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 726 transitions, 10657 flow [2024-06-28 03:39:07,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:39:07,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:39:07,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-28 03:39:07,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.478125 [2024-06-28 03:39:07,586 INFO L175 Difference]: Start difference. First operand has 382 places, 702 transitions, 9131 flow. Second operand 8 states and 153 transitions. [2024-06-28 03:39:07,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 726 transitions, 10657 flow [2024-06-28 03:39:10,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 726 transitions, 10424 flow, removed 77 selfloop flow, removed 4 redundant places. [2024-06-28 03:39:10,474 INFO L231 Difference]: Finished difference. Result has 386 places, 702 transitions, 9054 flow [2024-06-28 03:39:10,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8898, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=702, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=627, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9054, PETRI_PLACES=386, PETRI_TRANSITIONS=702} [2024-06-28 03:39:10,475 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 345 predicate places. [2024-06-28 03:39:10,475 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 702 transitions, 9054 flow [2024-06-28 03:39:10,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:10,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:10,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:10,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 03:39:10,475 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)] === [2024-06-28 03:39:10,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:10,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1992854978, now seen corresponding path program 1 times [2024-06-28 03:39:10,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:10,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666964248] [2024-06-28 03:39:10,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:10,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:10,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:11,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:11,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:11,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666964248] [2024-06-28 03:39:11,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666964248] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:11,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:11,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:11,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069843914] [2024-06-28 03:39:11,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:11,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:11,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:11,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:11,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:11,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:39:11,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 702 transitions, 9054 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:11,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:11,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:39:11,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:12,828 INFO L124 PetriNetUnfolderBase]: 3071/4907 cut-off events. [2024-06-28 03:39:12,829 INFO L125 PetriNetUnfolderBase]: For 638232/638232 co-relation queries the response was YES. [2024-06-28 03:39:12,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47336 conditions, 4907 events. 3071/4907 cut-off events. For 638232/638232 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 29370 event pairs, 440 based on Foata normal form. 2/4907 useless extension candidates. Maximal degree in co-relation 47154. Up to 4275 conditions per place. [2024-06-28 03:39:12,901 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 648 selfloop transitions, 76 changer transitions 0/729 dead transitions. [2024-06-28 03:39:12,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 729 transitions, 10736 flow [2024-06-28 03:39:12,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:12,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:12,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-28 03:39:12,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46111111111111114 [2024-06-28 03:39:12,903 INFO L175 Difference]: Start difference. First operand has 386 places, 702 transitions, 9054 flow. Second operand 9 states and 166 transitions. [2024-06-28 03:39:12,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 729 transitions, 10736 flow [2024-06-28 03:39:16,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 729 transitions, 10540 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 03:39:16,337 INFO L231 Difference]: Finished difference. Result has 388 places, 706 transitions, 9175 flow [2024-06-28 03:39:16,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8858, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=702, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=626, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9175, PETRI_PLACES=388, PETRI_TRANSITIONS=706} [2024-06-28 03:39:16,338 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 347 predicate places. [2024-06-28 03:39:16,338 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 706 transitions, 9175 flow [2024-06-28 03:39:16,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:16,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:16,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:16,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 03:39:16,339 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)] === [2024-06-28 03:39:16,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:16,339 INFO L85 PathProgramCache]: Analyzing trace with hash -2100735099, now seen corresponding path program 1 times [2024-06-28 03:39:16,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:16,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199451709] [2024-06-28 03:39:16,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:16,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:16,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:17,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:17,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:17,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199451709] [2024-06-28 03:39:17,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199451709] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:17,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:17,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:17,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114356413] [2024-06-28 03:39:17,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:17,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:17,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:17,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:17,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:17,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:39:17,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 706 transitions, 9175 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:17,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:17,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:39:17,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:18,576 INFO L124 PetriNetUnfolderBase]: 3081/4923 cut-off events. [2024-06-28 03:39:18,577 INFO L125 PetriNetUnfolderBase]: For 646482/646484 co-relation queries the response was YES. [2024-06-28 03:39:18,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47903 conditions, 4923 events. 3081/4923 cut-off events. For 646482/646484 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 29425 event pairs, 428 based on Foata normal form. 4/4926 useless extension candidates. Maximal degree in co-relation 47720. Up to 4353 conditions per place. [2024-06-28 03:39:18,660 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 643 selfloop transitions, 84 changer transitions 0/732 dead transitions. [2024-06-28 03:39:18,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 732 transitions, 10805 flow [2024-06-28 03:39:18,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:18,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:18,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-28 03:39:18,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44722222222222224 [2024-06-28 03:39:18,661 INFO L175 Difference]: Start difference. First operand has 388 places, 706 transitions, 9175 flow. Second operand 9 states and 161 transitions. [2024-06-28 03:39:18,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 732 transitions, 10805 flow [2024-06-28 03:39:22,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 732 transitions, 10516 flow, removed 71 selfloop flow, removed 7 redundant places. [2024-06-28 03:39:22,055 INFO L231 Difference]: Finished difference. Result has 392 places, 712 transitions, 9213 flow [2024-06-28 03:39:22,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8886, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=706, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=622, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9213, PETRI_PLACES=392, PETRI_TRANSITIONS=712} [2024-06-28 03:39:22,056 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 351 predicate places. [2024-06-28 03:39:22,056 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 712 transitions, 9213 flow [2024-06-28 03:39:22,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:22,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:22,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:22,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 03:39:22,057 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)] === [2024-06-28 03:39:22,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:22,057 INFO L85 PathProgramCache]: Analyzing trace with hash -904625275, now seen corresponding path program 2 times [2024-06-28 03:39:22,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:22,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517591077] [2024-06-28 03:39:22,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:22,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:22,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:22,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:22,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:22,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517591077] [2024-06-28 03:39:22,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517591077] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:22,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:22,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:39:22,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871283949] [2024-06-28 03:39:22,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:22,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:39:22,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:22,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:39:22,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:39:23,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:39:23,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 712 transitions, 9213 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:23,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:23,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:39:23,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:24,316 INFO L124 PetriNetUnfolderBase]: 3091/4939 cut-off events. [2024-06-28 03:39:24,316 INFO L125 PetriNetUnfolderBase]: For 659483/659485 co-relation queries the response was YES. [2024-06-28 03:39:24,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48169 conditions, 4939 events. 3091/4939 cut-off events. For 659483/659485 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 29567 event pairs, 432 based on Foata normal form. 4/4942 useless extension candidates. Maximal degree in co-relation 47983. Up to 4142 conditions per place. [2024-06-28 03:39:24,397 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 589 selfloop transitions, 142 changer transitions 0/736 dead transitions. [2024-06-28 03:39:24,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 736 transitions, 10860 flow [2024-06-28 03:39:24,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:24,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:24,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-28 03:39:24,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44722222222222224 [2024-06-28 03:39:24,398 INFO L175 Difference]: Start difference. First operand has 392 places, 712 transitions, 9213 flow. Second operand 9 states and 161 transitions. [2024-06-28 03:39:24,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 736 transitions, 10860 flow [2024-06-28 03:39:28,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 736 transitions, 10669 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-28 03:39:28,211 INFO L231 Difference]: Finished difference. Result has 396 places, 719 transitions, 9452 flow [2024-06-28 03:39:28,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9022, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=712, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=573, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9452, PETRI_PLACES=396, PETRI_TRANSITIONS=719} [2024-06-28 03:39:28,211 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 355 predicate places. [2024-06-28 03:39:28,211 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 719 transitions, 9452 flow [2024-06-28 03:39:28,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:28,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:28,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:28,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 03:39:28,212 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)] === [2024-06-28 03:39:28,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:28,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1870366161, now seen corresponding path program 3 times [2024-06-28 03:39:28,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:28,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42179243] [2024-06-28 03:39:28,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:28,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:28,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:29,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:29,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:29,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42179243] [2024-06-28 03:39:29,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42179243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:29,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:29,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:39:29,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839067916] [2024-06-28 03:39:29,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:29,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:39:29,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:29,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:39:29,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:39:29,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:39:29,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 719 transitions, 9452 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:29,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:29,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:39:29,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:30,589 INFO L124 PetriNetUnfolderBase]: 3119/4982 cut-off events. [2024-06-28 03:39:30,590 INFO L125 PetriNetUnfolderBase]: For 694350/694352 co-relation queries the response was YES. [2024-06-28 03:39:30,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49255 conditions, 4982 events. 3119/4982 cut-off events. For 694350/694352 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 29812 event pairs, 432 based on Foata normal form. 6/4987 useless extension candidates. Maximal degree in co-relation 49068. Up to 3736 conditions per place. [2024-06-28 03:39:30,671 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 459 selfloop transitions, 285 changer transitions 0/749 dead transitions. [2024-06-28 03:39:30,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 749 transitions, 11618 flow [2024-06-28 03:39:30,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:39:30,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:39:30,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-28 03:39:30,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.455 [2024-06-28 03:39:30,673 INFO L175 Difference]: Start difference. First operand has 396 places, 719 transitions, 9452 flow. Second operand 10 states and 182 transitions. [2024-06-28 03:39:30,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 749 transitions, 11618 flow [2024-06-28 03:39:33,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 749 transitions, 11393 flow, removed 40 selfloop flow, removed 4 redundant places. [2024-06-28 03:39:33,997 INFO L231 Difference]: Finished difference. Result has 402 places, 729 transitions, 10178 flow [2024-06-28 03:39:33,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9227, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=719, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=278, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10178, PETRI_PLACES=402, PETRI_TRANSITIONS=729} [2024-06-28 03:39:33,998 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 361 predicate places. [2024-06-28 03:39:33,998 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 729 transitions, 10178 flow [2024-06-28 03:39:33,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:33,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:33,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:33,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 03:39:33,999 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)] === [2024-06-28 03:39:33,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:33,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1477718082, now seen corresponding path program 1 times [2024-06-28 03:39:34,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:34,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288912991] [2024-06-28 03:39:34,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:34,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:34,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:34,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:34,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:34,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288912991] [2024-06-28 03:39:34,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288912991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:34,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:34,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:34,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231406022] [2024-06-28 03:39:34,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:34,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:34,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:34,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:34,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:34,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:39:34,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 729 transitions, 10178 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:34,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:34,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:39:34,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:36,254 INFO L124 PetriNetUnfolderBase]: 3155/5044 cut-off events. [2024-06-28 03:39:36,254 INFO L125 PetriNetUnfolderBase]: For 751281/751283 co-relation queries the response was YES. [2024-06-28 03:39:36,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50698 conditions, 5044 events. 3155/5044 cut-off events. For 751281/751283 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 30345 event pairs, 337 based on Foata normal form. 12/5055 useless extension candidates. Maximal degree in co-relation 50510. Up to 4375 conditions per place. [2024-06-28 03:39:36,331 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 693 selfloop transitions, 67 changer transitions 0/765 dead transitions. [2024-06-28 03:39:36,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 765 transitions, 12030 flow [2024-06-28 03:39:36,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:36,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:36,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-28 03:39:36,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-06-28 03:39:36,333 INFO L175 Difference]: Start difference. First operand has 402 places, 729 transitions, 10178 flow. Second operand 9 states and 171 transitions. [2024-06-28 03:39:36,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 765 transitions, 12030 flow [2024-06-28 03:39:39,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 765 transitions, 11458 flow, removed 128 selfloop flow, removed 6 redundant places. [2024-06-28 03:39:39,751 INFO L231 Difference]: Finished difference. Result has 405 places, 731 transitions, 9853 flow [2024-06-28 03:39:39,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9606, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=729, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=662, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9853, PETRI_PLACES=405, PETRI_TRANSITIONS=731} [2024-06-28 03:39:39,752 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 364 predicate places. [2024-06-28 03:39:39,752 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 731 transitions, 9853 flow [2024-06-28 03:39:39,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:39,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:39,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:39,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 03:39:39,753 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)] === [2024-06-28 03:39:39,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:39,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1211694372, now seen corresponding path program 2 times [2024-06-28 03:39:39,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:39,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304130154] [2024-06-28 03:39:39,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:39,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:39,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:40,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:40,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:40,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304130154] [2024-06-28 03:39:40,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304130154] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:40,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:40,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:40,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620438956] [2024-06-28 03:39:40,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:40,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:40,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:40,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:40,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:40,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:39:40,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 731 transitions, 9853 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:40,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:40,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:39:40,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:41,900 INFO L124 PetriNetUnfolderBase]: 3199/5118 cut-off events. [2024-06-28 03:39:41,900 INFO L125 PetriNetUnfolderBase]: For 775364/775366 co-relation queries the response was YES. [2024-06-28 03:39:41,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51447 conditions, 5118 events. 3199/5118 cut-off events. For 775364/775366 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 30853 event pairs, 457 based on Foata normal form. 14/5131 useless extension candidates. Maximal degree in co-relation 51257. Up to 4476 conditions per place. [2024-06-28 03:39:41,984 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 659 selfloop transitions, 96 changer transitions 0/760 dead transitions. [2024-06-28 03:39:41,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 760 transitions, 11651 flow [2024-06-28 03:39:41,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:41,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:41,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-28 03:39:41,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46944444444444444 [2024-06-28 03:39:41,986 INFO L175 Difference]: Start difference. First operand has 405 places, 731 transitions, 9853 flow. Second operand 9 states and 169 transitions. [2024-06-28 03:39:41,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 760 transitions, 11651 flow [2024-06-28 03:39:44,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 760 transitions, 11442 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-28 03:39:44,844 INFO L231 Difference]: Finished difference. Result has 407 places, 733 transitions, 9961 flow [2024-06-28 03:39:44,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9644, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=731, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=635, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9961, PETRI_PLACES=407, PETRI_TRANSITIONS=733} [2024-06-28 03:39:44,845 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 366 predicate places. [2024-06-28 03:39:44,845 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 733 transitions, 9961 flow [2024-06-28 03:39:44,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:44,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:44,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:44,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 03:39:44,846 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)] === [2024-06-28 03:39:44,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:44,846 INFO L85 PathProgramCache]: Analyzing trace with hash 232417672, now seen corresponding path program 3 times [2024-06-28 03:39:44,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:44,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141503726] [2024-06-28 03:39:44,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:44,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:44,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:45,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:45,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:45,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141503726] [2024-06-28 03:39:45,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141503726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:45,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:45,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:45,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426031944] [2024-06-28 03:39:45,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:45,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:45,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:45,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:45,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:45,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:39:45,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 733 transitions, 9961 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:45,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:45,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:39:45,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:47,143 INFO L124 PetriNetUnfolderBase]: 3243/5186 cut-off events. [2024-06-28 03:39:47,143 INFO L125 PetriNetUnfolderBase]: For 793926/793928 co-relation queries the response was YES. [2024-06-28 03:39:47,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52306 conditions, 5186 events. 3243/5186 cut-off events. For 793926/793928 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 31306 event pairs, 455 based on Foata normal form. 14/5199 useless extension candidates. Maximal degree in co-relation 52115. Up to 4416 conditions per place. [2024-06-28 03:39:47,234 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 668 selfloop transitions, 94 changer transitions 0/767 dead transitions. [2024-06-28 03:39:47,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 767 transitions, 11883 flow [2024-06-28 03:39:47,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:47,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:47,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-28 03:39:47,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48055555555555557 [2024-06-28 03:39:47,236 INFO L175 Difference]: Start difference. First operand has 407 places, 733 transitions, 9961 flow. Second operand 9 states and 173 transitions. [2024-06-28 03:39:47,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 767 transitions, 11883 flow [2024-06-28 03:39:50,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 767 transitions, 11626 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-28 03:39:50,778 INFO L231 Difference]: Finished difference. Result has 409 places, 735 transitions, 10013 flow [2024-06-28 03:39:50,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9704, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=733, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=639, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10013, PETRI_PLACES=409, PETRI_TRANSITIONS=735} [2024-06-28 03:39:50,779 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 368 predicate places. [2024-06-28 03:39:50,780 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 735 transitions, 10013 flow [2024-06-28 03:39:50,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:50,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:50,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:50,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 03:39:50,780 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)] === [2024-06-28 03:39:50,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:50,781 INFO L85 PathProgramCache]: Analyzing trace with hash 536316740, now seen corresponding path program 4 times [2024-06-28 03:39:50,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:50,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376588609] [2024-06-28 03:39:50,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:50,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:50,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:51,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:51,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:51,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376588609] [2024-06-28 03:39:51,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376588609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:51,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:51,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:51,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796854307] [2024-06-28 03:39:51,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:51,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:51,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:51,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:51,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:51,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:39:51,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 735 transitions, 10013 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:51,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:51,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:39:51,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:52,958 INFO L124 PetriNetUnfolderBase]: 3287/5254 cut-off events. [2024-06-28 03:39:52,958 INFO L125 PetriNetUnfolderBase]: For 809145/809147 co-relation queries the response was YES. [2024-06-28 03:39:53,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53143 conditions, 5254 events. 3287/5254 cut-off events. For 809145/809147 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 31756 event pairs, 488 based on Foata normal form. 14/5267 useless extension candidates. Maximal degree in co-relation 52951. Up to 4139 conditions per place. [2024-06-28 03:39:53,046 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 514 selfloop transitions, 240 changer transitions 0/759 dead transitions. [2024-06-28 03:39:53,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 759 transitions, 11799 flow [2024-06-28 03:39:53,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:53,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:53,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-28 03:39:53,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4638888888888889 [2024-06-28 03:39:53,048 INFO L175 Difference]: Start difference. First operand has 409 places, 735 transitions, 10013 flow. Second operand 9 states and 167 transitions. [2024-06-28 03:39:53,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 759 transitions, 11799 flow [2024-06-28 03:39:56,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 759 transitions, 11534 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-06-28 03:39:56,260 INFO L231 Difference]: Finished difference. Result has 411 places, 737 transitions, 10361 flow [2024-06-28 03:39:56,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9748, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=735, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=238, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10361, PETRI_PLACES=411, PETRI_TRANSITIONS=737} [2024-06-28 03:39:56,261 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 370 predicate places. [2024-06-28 03:39:56,261 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 737 transitions, 10361 flow [2024-06-28 03:39:56,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:56,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:56,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:56,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 03:39:56,261 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)] === [2024-06-28 03:39:56,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:56,262 INFO L85 PathProgramCache]: Analyzing trace with hash 535990310, now seen corresponding path program 5 times [2024-06-28 03:39:56,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:56,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852039950] [2024-06-28 03:39:56,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:56,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:56,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:57,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:57,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:57,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852039950] [2024-06-28 03:39:57,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852039950] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:57,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:57,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:57,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35097930] [2024-06-28 03:39:57,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:57,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:57,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:57,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:57,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:57,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:39:57,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 737 transitions, 10361 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:57,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:57,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:39:57,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:58,634 INFO L124 PetriNetUnfolderBase]: 3403/5426 cut-off events. [2024-06-28 03:39:58,634 INFO L125 PetriNetUnfolderBase]: For 911288/911290 co-relation queries the response was YES. [2024-06-28 03:39:58,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57000 conditions, 5426 events. 3403/5426 cut-off events. For 911288/911290 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 32811 event pairs, 498 based on Foata normal form. 14/5439 useless extension candidates. Maximal degree in co-relation 56807. Up to 4097 conditions per place. [2024-06-28 03:39:58,724 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 524 selfloop transitions, 240 changer transitions 0/769 dead transitions. [2024-06-28 03:39:58,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 769 transitions, 12623 flow [2024-06-28 03:39:58,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:58,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:58,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-28 03:39:58,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-06-28 03:39:58,725 INFO L175 Difference]: Start difference. First operand has 411 places, 737 transitions, 10361 flow. Second operand 9 states and 171 transitions. [2024-06-28 03:39:58,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 769 transitions, 12623 flow [2024-06-28 03:40:03,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 769 transitions, 12070 flow, removed 42 selfloop flow, removed 7 redundant places. [2024-06-28 03:40:03,091 INFO L231 Difference]: Finished difference. Result has 413 places, 741 transitions, 10537 flow [2024-06-28 03:40:03,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9808, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=737, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=238, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10537, PETRI_PLACES=413, PETRI_TRANSITIONS=741} [2024-06-28 03:40:03,092 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 372 predicate places. [2024-06-28 03:40:03,092 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 741 transitions, 10537 flow [2024-06-28 03:40:03,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:03,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:03,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:03,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 03:40:03,093 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)] === [2024-06-28 03:40:03,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:03,093 INFO L85 PathProgramCache]: Analyzing trace with hash -853942798, now seen corresponding path program 6 times [2024-06-28 03:40:03,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:03,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672020832] [2024-06-28 03:40:03,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:03,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:03,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:03,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:03,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:03,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672020832] [2024-06-28 03:40:03,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672020832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:03,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:03,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:03,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173052228] [2024-06-28 03:40:03,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:03,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:03,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:03,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:03,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:03,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:40:03,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 741 transitions, 10537 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:03,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:03,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:40:03,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:05,532 INFO L124 PetriNetUnfolderBase]: 3375/5394 cut-off events. [2024-06-28 03:40:05,532 INFO L125 PetriNetUnfolderBase]: For 844904/844906 co-relation queries the response was YES. [2024-06-28 03:40:05,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55139 conditions, 5394 events. 3375/5394 cut-off events. For 844904/844906 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 32761 event pairs, 516 based on Foata normal form. 14/5407 useless extension candidates. Maximal degree in co-relation 54945. Up to 4275 conditions per place. [2024-06-28 03:40:05,622 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 508 selfloop transitions, 250 changer transitions 0/763 dead transitions. [2024-06-28 03:40:05,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 763 transitions, 12215 flow [2024-06-28 03:40:05,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:40:05,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:40:05,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-28 03:40:05,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46111111111111114 [2024-06-28 03:40:05,623 INFO L175 Difference]: Start difference. First operand has 413 places, 741 transitions, 10537 flow. Second operand 9 states and 166 transitions. [2024-06-28 03:40:05,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 763 transitions, 12215 flow [2024-06-28 03:40:09,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 763 transitions, 11753 flow, removed 85 selfloop flow, removed 5 redundant places. [2024-06-28 03:40:09,717 INFO L231 Difference]: Finished difference. Result has 417 places, 741 transitions, 10588 flow [2024-06-28 03:40:09,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10075, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=741, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=250, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10588, PETRI_PLACES=417, PETRI_TRANSITIONS=741} [2024-06-28 03:40:09,718 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 376 predicate places. [2024-06-28 03:40:09,718 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 741 transitions, 10588 flow [2024-06-28 03:40:09,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:09,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:09,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:09,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 03:40:09,719 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)] === [2024-06-28 03:40:09,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:09,719 INFO L85 PathProgramCache]: Analyzing trace with hash 232756006, now seen corresponding path program 1 times [2024-06-28 03:40:09,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:09,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113289468] [2024-06-28 03:40:09,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:09,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:09,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:10,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:10,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:10,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113289468] [2024-06-28 03:40:10,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113289468] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:10,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:10,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:10,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997481400] [2024-06-28 03:40:10,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:10,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:10,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:10,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:10,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:10,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:40:10,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 741 transitions, 10588 flow. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:10,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:10,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:40:10,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:12,410 INFO L124 PetriNetUnfolderBase]: 3431/5484 cut-off events. [2024-06-28 03:40:12,410 INFO L125 PetriNetUnfolderBase]: For 886821/886823 co-relation queries the response was YES. [2024-06-28 03:40:12,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56434 conditions, 5484 events. 3431/5484 cut-off events. For 886821/886823 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 33427 event pairs, 523 based on Foata normal form. 18/5501 useless extension candidates. Maximal degree in co-relation 56238. Up to 4846 conditions per place. [2024-06-28 03:40:12,494 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 681 selfloop transitions, 84 changer transitions 0/770 dead transitions. [2024-06-28 03:40:12,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 770 transitions, 12380 flow [2024-06-28 03:40:12,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:12,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:12,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-28 03:40:12,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4525 [2024-06-28 03:40:12,495 INFO L175 Difference]: Start difference. First operand has 417 places, 741 transitions, 10588 flow. Second operand 10 states and 181 transitions. [2024-06-28 03:40:12,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 770 transitions, 12380 flow [2024-06-28 03:40:15,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 770 transitions, 11852 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:15,602 INFO L231 Difference]: Finished difference. Result has 419 places, 743 transitions, 10348 flow [2024-06-28 03:40:15,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10060, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=741, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=657, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10348, PETRI_PLACES=419, PETRI_TRANSITIONS=743} [2024-06-28 03:40:15,603 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 378 predicate places. [2024-06-28 03:40:15,603 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 743 transitions, 10348 flow [2024-06-28 03:40:15,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:15,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:15,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:15,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 03:40:15,604 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)] === [2024-06-28 03:40:15,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:15,604 INFO L85 PathProgramCache]: Analyzing trace with hash -908109830, now seen corresponding path program 2 times [2024-06-28 03:40:15,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:15,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121830563] [2024-06-28 03:40:15,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:15,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:15,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:16,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:16,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:16,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121830563] [2024-06-28 03:40:16,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121830563] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:16,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:16,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:16,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065408553] [2024-06-28 03:40:16,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:16,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:16,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:16,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:16,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:16,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:40:16,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 743 transitions, 10348 flow. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:16,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:16,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:40:16,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:18,223 INFO L124 PetriNetUnfolderBase]: 3588/5735 cut-off events. [2024-06-28 03:40:18,223 INFO L125 PetriNetUnfolderBase]: For 1096212/1096214 co-relation queries the response was YES. [2024-06-28 03:40:18,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58967 conditions, 5735 events. 3588/5735 cut-off events. For 1096212/1096214 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 35087 event pairs, 582 based on Foata normal form. 45/5777 useless extension candidates. Maximal degree in co-relation 58770. Up to 4379 conditions per place. [2024-06-28 03:40:18,325 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 517 selfloop transitions, 233 changer transitions 18/773 dead transitions. [2024-06-28 03:40:18,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 773 transitions, 12277 flow [2024-06-28 03:40:18,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:18,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:18,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-28 03:40:18,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.465 [2024-06-28 03:40:18,327 INFO L175 Difference]: Start difference. First operand has 419 places, 743 transitions, 10348 flow. Second operand 10 states and 186 transitions. [2024-06-28 03:40:18,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 773 transitions, 12277 flow [2024-06-28 03:40:22,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 773 transitions, 12037 flow, removed 38 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:22,241 INFO L231 Difference]: Finished difference. Result has 422 places, 732 transitions, 10543 flow [2024-06-28 03:40:22,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10108, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=743, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=231, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=510, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10543, PETRI_PLACES=422, PETRI_TRANSITIONS=732} [2024-06-28 03:40:22,241 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 381 predicate places. [2024-06-28 03:40:22,241 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 732 transitions, 10543 flow [2024-06-28 03:40:22,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:22,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:22,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:22,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 03:40:22,242 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)] === [2024-06-28 03:40:22,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:22,243 INFO L85 PathProgramCache]: Analyzing trace with hash 547053404, now seen corresponding path program 3 times [2024-06-28 03:40:22,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:22,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116314506] [2024-06-28 03:40:22,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:22,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:22,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:23,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:23,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:23,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116314506] [2024-06-28 03:40:23,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116314506] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:23,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:23,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:23,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611155835] [2024-06-28 03:40:23,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:23,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:23,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:23,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:23,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:23,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:40:23,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 732 transitions, 10543 flow. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:23,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:23,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:40:23,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:24,912 INFO L124 PetriNetUnfolderBase]: 3609/5776 cut-off events. [2024-06-28 03:40:24,912 INFO L125 PetriNetUnfolderBase]: For 1137342/1137344 co-relation queries the response was YES. [2024-06-28 03:40:24,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60162 conditions, 5776 events. 3609/5776 cut-off events. For 1137342/1137344 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 35514 event pairs, 592 based on Foata normal form. 45/5818 useless extension candidates. Maximal degree in co-relation 59963. Up to 4437 conditions per place. [2024-06-28 03:40:25,014 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 508 selfloop transitions, 226 changer transitions 23/762 dead transitions. [2024-06-28 03:40:25,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 762 transitions, 12460 flow [2024-06-28 03:40:25,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:25,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:25,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-28 03:40:25,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4625 [2024-06-28 03:40:25,015 INFO L175 Difference]: Start difference. First operand has 422 places, 732 transitions, 10543 flow. Second operand 10 states and 185 transitions. [2024-06-28 03:40:25,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 762 transitions, 12460 flow [2024-06-28 03:40:28,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 762 transitions, 11894 flow, removed 42 selfloop flow, removed 10 redundant places. [2024-06-28 03:40:28,778 INFO L231 Difference]: Finished difference. Result has 423 places, 716 transitions, 10357 flow [2024-06-28 03:40:28,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9977, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=732, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=224, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10357, PETRI_PLACES=423, PETRI_TRANSITIONS=716} [2024-06-28 03:40:28,779 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 382 predicate places. [2024-06-28 03:40:28,779 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 716 transitions, 10357 flow [2024-06-28 03:40:28,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:28,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:28,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:28,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 03:40:28,780 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)] === [2024-06-28 03:40:28,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:28,781 INFO L85 PathProgramCache]: Analyzing trace with hash -896997260, now seen corresponding path program 4 times [2024-06-28 03:40:28,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:28,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488874454] [2024-06-28 03:40:28,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:28,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:28,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:29,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:29,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:29,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488874454] [2024-06-28 03:40:29,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488874454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:29,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:29,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:40:29,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369752171] [2024-06-28 03:40:29,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:29,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:40:29,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:29,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:40:29,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:40:30,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:40:30,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 716 transitions, 10357 flow. Second operand has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 12 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:30,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:30,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:40:30,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:32,024 INFO L124 PetriNetUnfolderBase]: 4029/6495 cut-off events. [2024-06-28 03:40:32,024 INFO L125 PetriNetUnfolderBase]: For 1656790/1656790 co-relation queries the response was YES. [2024-06-28 03:40:32,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76885 conditions, 6495 events. 4029/6495 cut-off events. For 1656790/1656790 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 40836 event pairs, 674 based on Foata normal form. 42/6529 useless extension candidates. Maximal degree in co-relation 76685. Up to 3689 conditions per place. [2024-06-28 03:40:32,128 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 485 selfloop transitions, 281 changer transitions 0/771 dead transitions. [2024-06-28 03:40:32,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 771 transitions, 14027 flow [2024-06-28 03:40:32,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:32,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:32,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-28 03:40:32,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49 [2024-06-28 03:40:32,129 INFO L175 Difference]: Start difference. First operand has 423 places, 716 transitions, 10357 flow. Second operand 10 states and 196 transitions. [2024-06-28 03:40:32,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 771 transitions, 14027 flow [2024-06-28 03:40:36,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 771 transitions, 13473 flow, removed 45 selfloop flow, removed 9 redundant places. [2024-06-28 03:40:36,692 INFO L231 Difference]: Finished difference. Result has 428 places, 729 transitions, 11350 flow [2024-06-28 03:40:36,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9803, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=716, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=269, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11350, PETRI_PLACES=428, PETRI_TRANSITIONS=729} [2024-06-28 03:40:36,692 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 387 predicate places. [2024-06-28 03:40:36,692 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 729 transitions, 11350 flow [2024-06-28 03:40:36,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 12 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:36,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:36,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:36,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 03:40:36,694 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)] === [2024-06-28 03:40:36,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:36,694 INFO L85 PathProgramCache]: Analyzing trace with hash -897010280, now seen corresponding path program 5 times [2024-06-28 03:40:36,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:36,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838772917] [2024-06-28 03:40:36,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:36,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:36,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:37,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:37,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:37,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838772917] [2024-06-28 03:40:37,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838772917] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:37,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:37,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:40:37,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740207929] [2024-06-28 03:40:37,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:37,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:40:37,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:37,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:40:37,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:40:37,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:40:37,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 729 transitions, 11350 flow. Second operand has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 12 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:37,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:37,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:40:37,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:40,183 INFO L124 PetriNetUnfolderBase]: 4242/6858 cut-off events. [2024-06-28 03:40:40,183 INFO L125 PetriNetUnfolderBase]: For 1829684/1829684 co-relation queries the response was YES. [2024-06-28 03:40:40,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83677 conditions, 6858 events. 4242/6858 cut-off events. For 1829684/1829684 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 43808 event pairs, 814 based on Foata normal form. 53/6907 useless extension candidates. Maximal degree in co-relation 83472. Up to 4984 conditions per place. [2024-06-28 03:40:40,310 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 455 selfloop transitions, 310 changer transitions 2/772 dead transitions. [2024-06-28 03:40:40,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 772 transitions, 14470 flow [2024-06-28 03:40:40,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:40:40,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:40:40,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 207 transitions. [2024-06-28 03:40:40,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47045454545454546 [2024-06-28 03:40:40,312 INFO L175 Difference]: Start difference. First operand has 428 places, 729 transitions, 11350 flow. Second operand 11 states and 207 transitions. [2024-06-28 03:40:40,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 772 transitions, 14470 flow [2024-06-28 03:40:45,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 772 transitions, 14161 flow, removed 104 selfloop flow, removed 4 redundant places. [2024-06-28 03:40:45,367 INFO L231 Difference]: Finished difference. Result has 437 places, 740 transitions, 12341 flow [2024-06-28 03:40:45,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11097, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=729, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=298, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12341, PETRI_PLACES=437, PETRI_TRANSITIONS=740} [2024-06-28 03:40:45,368 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 396 predicate places. [2024-06-28 03:40:45,368 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 740 transitions, 12341 flow [2024-06-28 03:40:45,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 12 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:45,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:45,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:45,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 03:40:45,368 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)] === [2024-06-28 03:40:45,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:45,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1211509054, now seen corresponding path program 2 times [2024-06-28 03:40:45,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:45,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210035627] [2024-06-28 03:40:45,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:45,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:45,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:46,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:46,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:46,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210035627] [2024-06-28 03:40:46,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210035627] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:46,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:46,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:46,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298070805] [2024-06-28 03:40:46,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:46,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:46,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:46,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:46,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:46,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:40:46,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 740 transitions, 12341 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:46,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:46,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:40:46,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:48,211 INFO L124 PetriNetUnfolderBase]: 4243/6861 cut-off events. [2024-06-28 03:40:48,212 INFO L125 PetriNetUnfolderBase]: For 1520424/1520424 co-relation queries the response was YES. [2024-06-28 03:40:48,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84229 conditions, 6861 events. 4243/6861 cut-off events. For 1520424/1520424 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 43819 event pairs, 867 based on Foata normal form. 1/6856 useless extension candidates. Maximal degree in co-relation 84021. Up to 6174 conditions per place. [2024-06-28 03:40:48,342 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 683 selfloop transitions, 75 changer transitions 1/764 dead transitions. [2024-06-28 03:40:48,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 764 transitions, 14080 flow [2024-06-28 03:40:48,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:40:48,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:40:48,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-28 03:40:48,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-28 03:40:48,343 INFO L175 Difference]: Start difference. First operand has 437 places, 740 transitions, 12341 flow. Second operand 9 states and 162 transitions. [2024-06-28 03:40:48,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 764 transitions, 14080 flow [2024-06-28 03:40:56,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 764 transitions, 13354 flow, removed 158 selfloop flow, removed 7 redundant places. [2024-06-28 03:40:56,586 INFO L231 Difference]: Finished difference. Result has 439 places, 742 transitions, 11870 flow [2024-06-28 03:40:56,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11630, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=740, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=665, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11870, PETRI_PLACES=439, PETRI_TRANSITIONS=742} [2024-06-28 03:40:56,587 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 398 predicate places. [2024-06-28 03:40:56,587 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 742 transitions, 11870 flow [2024-06-28 03:40:56,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:56,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:56,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:56,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 03:40:56,587 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)] === [2024-06-28 03:40:56,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:56,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1699589592, now seen corresponding path program 4 times [2024-06-28 03:40:56,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:56,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213964791] [2024-06-28 03:40:56,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:56,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:56,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:57,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:57,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:57,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213964791] [2024-06-28 03:40:57,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213964791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:57,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:57,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:57,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670213810] [2024-06-28 03:40:57,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:57,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:57,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:57,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:57,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:57,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:40:57,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 742 transitions, 11870 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:57,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:57,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:40:57,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:59,363 INFO L124 PetriNetUnfolderBase]: 4253/6884 cut-off events. [2024-06-28 03:40:59,363 INFO L125 PetriNetUnfolderBase]: For 1500913/1500915 co-relation queries the response was YES. [2024-06-28 03:40:59,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83297 conditions, 6884 events. 4253/6884 cut-off events. For 1500913/1500915 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 44084 event pairs, 870 based on Foata normal form. 3/6886 useless extension candidates. Maximal degree in co-relation 83088. Up to 6190 conditions per place. [2024-06-28 03:40:59,491 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 693 selfloop transitions, 71 changer transitions 0/769 dead transitions. [2024-06-28 03:40:59,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 769 transitions, 13623 flow [2024-06-28 03:40:59,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:59,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:59,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-28 03:40:59,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4325 [2024-06-28 03:40:59,492 INFO L175 Difference]: Start difference. First operand has 439 places, 742 transitions, 11870 flow. Second operand 10 states and 173 transitions. [2024-06-28 03:40:59,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 769 transitions, 13623 flow [2024-06-28 03:41:08,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 769 transitions, 13404 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-28 03:41:08,477 INFO L231 Difference]: Finished difference. Result has 443 places, 749 transitions, 11973 flow [2024-06-28 03:41:08,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11657, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=742, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=674, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11973, PETRI_PLACES=443, PETRI_TRANSITIONS=749} [2024-06-28 03:41:08,478 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 402 predicate places. [2024-06-28 03:41:08,478 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 749 transitions, 11973 flow [2024-06-28 03:41:08,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:08,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:08,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:08,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 03:41:08,478 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)] === [2024-06-28 03:41:08,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:08,479 INFO L85 PathProgramCache]: Analyzing trace with hash 2024836399, now seen corresponding path program 4 times [2024-06-28 03:41:08,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:08,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634140370] [2024-06-28 03:41:08,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:08,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:08,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:09,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:09,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:09,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634140370] [2024-06-28 03:41:09,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634140370] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:09,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:09,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:09,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229822146] [2024-06-28 03:41:09,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:09,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:09,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:09,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:09,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:09,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:41:09,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 749 transitions, 11973 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:09,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:09,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:41:09,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:11,837 INFO L124 PetriNetUnfolderBase]: 4243/6860 cut-off events. [2024-06-28 03:41:11,838 INFO L125 PetriNetUnfolderBase]: For 1521733/1521733 co-relation queries the response was YES. [2024-06-28 03:41:11,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83250 conditions, 6860 events. 4243/6860 cut-off events. For 1521733/1521733 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 43799 event pairs, 845 based on Foata normal form. 2/6860 useless extension candidates. Maximal degree in co-relation 83039. Up to 6251 conditions per place. [2024-06-28 03:41:11,952 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 679 selfloop transitions, 83 changer transitions 1/768 dead transitions. [2024-06-28 03:41:11,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 768 transitions, 13680 flow [2024-06-28 03:41:11,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:41:11,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:41:11,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-28 03:41:11,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-06-28 03:41:11,953 INFO L175 Difference]: Start difference. First operand has 443 places, 749 transitions, 11973 flow. Second operand 9 states and 159 transitions. [2024-06-28 03:41:11,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 768 transitions, 13680 flow [2024-06-28 03:41:19,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 768 transitions, 13308 flow, removed 67 selfloop flow, removed 9 redundant places. [2024-06-28 03:41:19,529 INFO L231 Difference]: Finished difference. Result has 443 places, 751 transitions, 11862 flow [2024-06-28 03:41:19,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11601, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=749, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=666, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11862, PETRI_PLACES=443, PETRI_TRANSITIONS=751} [2024-06-28 03:41:19,530 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 402 predicate places. [2024-06-28 03:41:19,530 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 751 transitions, 11862 flow [2024-06-28 03:41:19,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:19,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:19,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:19,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 03:41:19,531 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)] === [2024-06-28 03:41:19,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:19,531 INFO L85 PathProgramCache]: Analyzing trace with hash -924484978, now seen corresponding path program 5 times [2024-06-28 03:41:19,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:19,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513738948] [2024-06-28 03:41:19,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:19,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:19,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:20,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:20,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:20,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513738948] [2024-06-28 03:41:20,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513738948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:20,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:20,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:41:20,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767678585] [2024-06-28 03:41:20,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:20,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:41:20,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:20,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:41:20,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:41:20,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:41:20,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 751 transitions, 11862 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:20,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:20,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:41:20,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:22,433 INFO L124 PetriNetUnfolderBase]: 4246/6873 cut-off events. [2024-06-28 03:41:22,433 INFO L125 PetriNetUnfolderBase]: For 1533289/1533289 co-relation queries the response was YES. [2024-06-28 03:41:22,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83278 conditions, 6873 events. 4246/6873 cut-off events. For 1533289/1533289 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 43983 event pairs, 850 based on Foata normal form. 1/6872 useless extension candidates. Maximal degree in co-relation 83067. Up to 6141 conditions per place. [2024-06-28 03:41:22,556 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 669 selfloop transitions, 100 changer transitions 0/774 dead transitions. [2024-06-28 03:41:22,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 774 transitions, 13590 flow [2024-06-28 03:41:22,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:41:22,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:41:22,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2024-06-28 03:41:22,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4928571428571429 [2024-06-28 03:41:22,562 INFO L175 Difference]: Start difference. First operand has 443 places, 751 transitions, 11862 flow. Second operand 7 states and 138 transitions. [2024-06-28 03:41:22,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 774 transitions, 13590 flow [2024-06-28 03:41:29,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 774 transitions, 13252 flow, removed 44 selfloop flow, removed 8 redundant places. [2024-06-28 03:41:29,317 INFO L231 Difference]: Finished difference. Result has 442 places, 754 transitions, 11881 flow [2024-06-28 03:41:29,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11524, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=751, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=651, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11881, PETRI_PLACES=442, PETRI_TRANSITIONS=754} [2024-06-28 03:41:29,317 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 401 predicate places. [2024-06-28 03:41:29,317 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 754 transitions, 11881 flow [2024-06-28 03:41:29,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:29,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:29,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:29,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 03:41:29,318 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)] === [2024-06-28 03:41:29,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:29,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1587922368, now seen corresponding path program 6 times [2024-06-28 03:41:29,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:29,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973603840] [2024-06-28 03:41:29,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:29,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:29,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:30,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:30,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:30,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973603840] [2024-06-28 03:41:30,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973603840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:30,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:30,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:41:30,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069646161] [2024-06-28 03:41:30,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:30,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:41:30,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:30,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:41:30,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:41:30,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:41:30,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 754 transitions, 11881 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:30,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:30,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:41:30,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:32,165 INFO L124 PetriNetUnfolderBase]: 4243/6868 cut-off events. [2024-06-28 03:41:32,165 INFO L125 PetriNetUnfolderBase]: For 1546090/1546092 co-relation queries the response was YES. [2024-06-28 03:41:32,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82915 conditions, 6868 events. 4243/6868 cut-off events. For 1546090/1546092 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 43973 event pairs, 868 based on Foata normal form. 3/6870 useless extension candidates. Maximal degree in co-relation 82704. Up to 6164 conditions per place. [2024-06-28 03:41:32,301 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 687 selfloop transitions, 78 changer transitions 0/770 dead transitions. [2024-06-28 03:41:32,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 770 transitions, 13469 flow [2024-06-28 03:41:32,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:41:32,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:41:32,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-28 03:41:32,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4361111111111111 [2024-06-28 03:41:32,303 INFO L175 Difference]: Start difference. First operand has 442 places, 754 transitions, 11881 flow. Second operand 9 states and 157 transitions. [2024-06-28 03:41:32,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 770 transitions, 13469 flow [2024-06-28 03:41:39,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 770 transitions, 13200 flow, removed 50 selfloop flow, removed 6 redundant places. [2024-06-28 03:41:39,932 INFO L231 Difference]: Finished difference. Result has 445 places, 754 transitions, 11774 flow [2024-06-28 03:41:39,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11612, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=754, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=676, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11774, PETRI_PLACES=445, PETRI_TRANSITIONS=754} [2024-06-28 03:41:39,932 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 404 predicate places. [2024-06-28 03:41:39,933 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 754 transitions, 11774 flow [2024-06-28 03:41:39,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:39,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:39,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:39,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 03:41:39,933 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)] === [2024-06-28 03:41:39,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:39,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1558459300, now seen corresponding path program 3 times [2024-06-28 03:41:39,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:39,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36907245] [2024-06-28 03:41:39,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:39,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:39,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:40,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:40,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:40,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36907245] [2024-06-28 03:41:40,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36907245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:40,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:40,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:41:40,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110077424] [2024-06-28 03:41:40,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:40,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:41:40,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:40,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:41:40,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:41:40,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:41:40,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 754 transitions, 11774 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:40,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:40,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:41:40,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:42,771 INFO L124 PetriNetUnfolderBase]: 4228/6831 cut-off events. [2024-06-28 03:41:42,772 INFO L125 PetriNetUnfolderBase]: For 1513816/1513816 co-relation queries the response was YES. [2024-06-28 03:41:42,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82091 conditions, 6831 events. 4228/6831 cut-off events. For 1513816/1513816 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 43568 event pairs, 855 based on Foata normal form. 1/6828 useless extension candidates. Maximal degree in co-relation 81880. Up to 6145 conditions per place. [2024-06-28 03:41:42,905 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 683 selfloop transitions, 83 changer transitions 4/775 dead transitions. [2024-06-28 03:41:42,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 775 transitions, 13463 flow [2024-06-28 03:41:42,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:41:42,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:41:42,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-28 03:41:42,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-28 03:41:42,906 INFO L175 Difference]: Start difference. First operand has 445 places, 754 transitions, 11774 flow. Second operand 9 states and 162 transitions. [2024-06-28 03:41:42,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 775 transitions, 13463 flow [2024-06-28 03:41:50,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 775 transitions, 13107 flow, removed 48 selfloop flow, removed 7 redundant places. [2024-06-28 03:41:50,633 INFO L231 Difference]: Finished difference. Result has 447 places, 752 transitions, 11581 flow [2024-06-28 03:41:50,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11418, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=754, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=671, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11581, PETRI_PLACES=447, PETRI_TRANSITIONS=752} [2024-06-28 03:41:50,633 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 406 predicate places. [2024-06-28 03:41:50,633 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 752 transitions, 11581 flow [2024-06-28 03:41:50,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:50,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:50,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:50,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 03:41:50,634 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)] === [2024-06-28 03:41:50,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:50,635 INFO L85 PathProgramCache]: Analyzing trace with hash -569923408, now seen corresponding path program 7 times [2024-06-28 03:41:50,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:50,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424087018] [2024-06-28 03:41:50,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:50,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:50,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:51,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:51,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:51,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424087018] [2024-06-28 03:41:51,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424087018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:51,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:51,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:41:51,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518242745] [2024-06-28 03:41:51,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:51,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:41:51,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:51,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:41:51,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:41:51,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:41:51,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 752 transitions, 11581 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:51,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:51,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:41:51,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:53,481 INFO L124 PetriNetUnfolderBase]: 4190/6771 cut-off events. [2024-06-28 03:41:53,481 INFO L125 PetriNetUnfolderBase]: For 1520645/1520645 co-relation queries the response was YES. [2024-06-28 03:41:53,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81308 conditions, 6771 events. 4190/6771 cut-off events. For 1520645/1520645 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 43163 event pairs, 892 based on Foata normal form. 1/6766 useless extension candidates. Maximal degree in co-relation 81096. Up to 5777 conditions per place. [2024-06-28 03:41:53,609 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 567 selfloop transitions, 194 changer transitions 0/766 dead transitions. [2024-06-28 03:41:53,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 766 transitions, 13267 flow [2024-06-28 03:41:53,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:41:53,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:41:53,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-06-28 03:41:53,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-28 03:41:53,613 INFO L175 Difference]: Start difference. First operand has 447 places, 752 transitions, 11581 flow. Second operand 7 states and 130 transitions. [2024-06-28 03:41:53,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 766 transitions, 13267 flow [2024-06-28 03:42:01,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 766 transitions, 12846 flow, removed 42 selfloop flow, removed 9 redundant places. [2024-06-28 03:42:01,909 INFO L231 Difference]: Finished difference. Result has 445 places, 755 transitions, 11693 flow [2024-06-28 03:42:01,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11160, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=752, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=558, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11693, PETRI_PLACES=445, PETRI_TRANSITIONS=755} [2024-06-28 03:42:01,910 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 404 predicate places. [2024-06-28 03:42:01,910 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 755 transitions, 11693 flow [2024-06-28 03:42:01,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:01,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:01,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:01,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 03:42:01,911 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)] === [2024-06-28 03:42:01,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:01,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1577745006, now seen corresponding path program 4 times [2024-06-28 03:42:01,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:01,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234795527] [2024-06-28 03:42:01,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:01,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:01,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:02,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:02,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:02,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234795527] [2024-06-28 03:42:02,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234795527] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:02,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:02,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:42:02,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102016792] [2024-06-28 03:42:02,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:02,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:42:02,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:02,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:42:02,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:42:02,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:42:02,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 755 transitions, 11693 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:02,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:02,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:42:02,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:04,937 INFO L124 PetriNetUnfolderBase]: 4195/6771 cut-off events. [2024-06-28 03:42:04,937 INFO L125 PetriNetUnfolderBase]: For 1547750/1547750 co-relation queries the response was YES. [2024-06-28 03:42:05,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81844 conditions, 6771 events. 4195/6771 cut-off events. For 1547750/1547750 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 42976 event pairs, 851 based on Foata normal form. 1/6768 useless extension candidates. Maximal degree in co-relation 81632. Up to 6061 conditions per place. [2024-06-28 03:42:05,057 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 665 selfloop transitions, 108 changer transitions 0/778 dead transitions. [2024-06-28 03:42:05,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 778 transitions, 13843 flow [2024-06-28 03:42:05,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:42:05,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:42:05,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-06-28 03:42:05,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4425 [2024-06-28 03:42:05,059 INFO L175 Difference]: Start difference. First operand has 445 places, 755 transitions, 11693 flow. Second operand 10 states and 177 transitions. [2024-06-28 03:42:05,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 778 transitions, 13843 flow [2024-06-28 03:42:12,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 778 transitions, 13370 flow, removed 51 selfloop flow, removed 5 redundant places. [2024-06-28 03:42:12,555 INFO L231 Difference]: Finished difference. Result has 450 places, 761 transitions, 11744 flow [2024-06-28 03:42:12,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11220, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=755, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=650, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11744, PETRI_PLACES=450, PETRI_TRANSITIONS=761} [2024-06-28 03:42:12,555 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 409 predicate places. [2024-06-28 03:42:12,556 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 761 transitions, 11744 flow [2024-06-28 03:42:12,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:12,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:12,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:12,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 03:42:12,556 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)] === [2024-06-28 03:42:12,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:12,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1274566456, now seen corresponding path program 5 times [2024-06-28 03:42:12,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:12,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472961398] [2024-06-28 03:42:12,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:12,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:12,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:13,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:13,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:13,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472961398] [2024-06-28 03:42:13,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472961398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:13,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:13,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:42:13,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599474769] [2024-06-28 03:42:13,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:13,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:42:13,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:13,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:42:13,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:42:13,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:42:13,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 761 transitions, 11744 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:13,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:13,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:42:13,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:15,554 INFO L124 PetriNetUnfolderBase]: 4192/6783 cut-off events. [2024-06-28 03:42:15,554 INFO L125 PetriNetUnfolderBase]: For 1567887/1567887 co-relation queries the response was YES. [2024-06-28 03:42:15,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81956 conditions, 6783 events. 4192/6783 cut-off events. For 1567887/1567887 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 43271 event pairs, 925 based on Foata normal form. 1/6783 useless extension candidates. Maximal degree in co-relation 81743. Up to 6363 conditions per place. [2024-06-28 03:42:15,683 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 749 selfloop transitions, 24 changer transitions 0/778 dead transitions. [2024-06-28 03:42:15,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 778 transitions, 13350 flow [2024-06-28 03:42:15,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:42:15,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:42:15,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-28 03:42:15,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41944444444444445 [2024-06-28 03:42:15,684 INFO L175 Difference]: Start difference. First operand has 450 places, 761 transitions, 11744 flow. Second operand 9 states and 151 transitions. [2024-06-28 03:42:15,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 778 transitions, 13350 flow [2024-06-28 03:42:22,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 778 transitions, 12935 flow, removed 140 selfloop flow, removed 6 redundant places. [2024-06-28 03:42:22,301 INFO L231 Difference]: Finished difference. Result has 453 places, 761 transitions, 11383 flow [2024-06-28 03:42:22,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11329, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=761, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=737, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11383, PETRI_PLACES=453, PETRI_TRANSITIONS=761} [2024-06-28 03:42:22,302 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 412 predicate places. [2024-06-28 03:42:22,302 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 761 transitions, 11383 flow [2024-06-28 03:42:22,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:22,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:22,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:22,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-28 03:42:22,303 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)] === [2024-06-28 03:42:22,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:22,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1298209915, now seen corresponding path program 5 times [2024-06-28 03:42:22,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:22,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76543942] [2024-06-28 03:42:22,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:22,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:22,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:23,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:23,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:23,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76543942] [2024-06-28 03:42:23,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76543942] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:23,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:23,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:42:23,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779579400] [2024-06-28 03:42:23,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:23,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:42:23,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:23,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:42:23,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:42:23,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:42:23,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 761 transitions, 11383 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:23,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:23,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:42:23,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:25,216 INFO L124 PetriNetUnfolderBase]: 4197/6790 cut-off events. [2024-06-28 03:42:25,217 INFO L125 PetriNetUnfolderBase]: For 1584230/1584230 co-relation queries the response was YES. [2024-06-28 03:42:25,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81863 conditions, 6790 events. 4197/6790 cut-off events. For 1584230/1584230 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 43331 event pairs, 839 based on Foata normal form. 1/6789 useless extension candidates. Maximal degree in co-relation 81648. Up to 6139 conditions per place. [2024-06-28 03:42:25,353 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 675 selfloop transitions, 99 changer transitions 0/779 dead transitions. [2024-06-28 03:42:25,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 779 transitions, 13064 flow [2024-06-28 03:42:25,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:42:25,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:42:25,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-28 03:42:25,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4361111111111111 [2024-06-28 03:42:25,354 INFO L175 Difference]: Start difference. First operand has 453 places, 761 transitions, 11383 flow. Second operand 9 states and 157 transitions. [2024-06-28 03:42:25,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 779 transitions, 13064 flow [2024-06-28 03:42:32,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 779 transitions, 13008 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 03:42:32,230 INFO L231 Difference]: Finished difference. Result has 456 places, 766 transitions, 11647 flow [2024-06-28 03:42:32,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11327, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=761, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=662, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11647, PETRI_PLACES=456, PETRI_TRANSITIONS=766} [2024-06-28 03:42:32,235 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 415 predicate places. [2024-06-28 03:42:32,236 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 766 transitions, 11647 flow [2024-06-28 03:42:32,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:32,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:32,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:32,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-28 03:42:32,236 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)] === [2024-06-28 03:42:32,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:32,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1284877435, now seen corresponding path program 6 times [2024-06-28 03:42:32,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:32,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171750267] [2024-06-28 03:42:32,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:32,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:32,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:33,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:33,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:33,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171750267] [2024-06-28 03:42:33,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171750267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:33,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:33,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:42:33,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643444889] [2024-06-28 03:42:33,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:33,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:42:33,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:33,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:42:33,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:42:33,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:42:33,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 766 transitions, 11647 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:33,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:33,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:42:33,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:35,759 INFO L124 PetriNetUnfolderBase]: 4212/6815 cut-off events. [2024-06-28 03:42:35,759 INFO L125 PetriNetUnfolderBase]: For 1627569/1627569 co-relation queries the response was YES. [2024-06-28 03:42:35,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82728 conditions, 6815 events. 4212/6815 cut-off events. For 1627569/1627569 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 43601 event pairs, 922 based on Foata normal form. 3/6817 useless extension candidates. Maximal degree in co-relation 82510. Up to 6335 conditions per place. [2024-06-28 03:42:35,876 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 726 selfloop transitions, 59 changer transitions 0/790 dead transitions. [2024-06-28 03:42:35,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 790 transitions, 13525 flow [2024-06-28 03:42:35,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:42:35,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:42:35,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-28 03:42:35,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42 [2024-06-28 03:42:35,877 INFO L175 Difference]: Start difference. First operand has 456 places, 766 transitions, 11647 flow. Second operand 10 states and 168 transitions. [2024-06-28 03:42:35,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 790 transitions, 13525 flow [2024-06-28 03:42:43,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 790 transitions, 13262 flow, removed 34 selfloop flow, removed 5 redundant places. [2024-06-28 03:42:43,834 INFO L231 Difference]: Finished difference. Result has 461 places, 773 transitions, 11774 flow [2024-06-28 03:42:43,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11385, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=766, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=707, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11774, PETRI_PLACES=461, PETRI_TRANSITIONS=773} [2024-06-28 03:42:43,835 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 420 predicate places. [2024-06-28 03:42:43,835 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 773 transitions, 11774 flow [2024-06-28 03:42:43,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:43,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:43,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:43,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-28 03:42:43,836 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)] === [2024-06-28 03:42:43,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:43,836 INFO L85 PathProgramCache]: Analyzing trace with hash 210953093, now seen corresponding path program 7 times [2024-06-28 03:42:43,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:43,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736595870] [2024-06-28 03:42:43,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:43,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:43,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:44,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:44,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:44,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736595870] [2024-06-28 03:42:44,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736595870] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:44,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:44,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:42:44,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820865086] [2024-06-28 03:42:44,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:44,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:42:44,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:44,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:42:44,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:42:44,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:42:44,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 773 transitions, 11774 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:44,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:44,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:42:44,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:46,783 INFO L124 PetriNetUnfolderBase]: 4222/6838 cut-off events. [2024-06-28 03:42:46,783 INFO L125 PetriNetUnfolderBase]: For 1640273/1640275 co-relation queries the response was YES. [2024-06-28 03:42:46,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83107 conditions, 6838 events. 4222/6838 cut-off events. For 1640273/1640275 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 43729 event pairs, 865 based on Foata normal form. 4/6841 useless extension candidates. Maximal degree in co-relation 82889. Up to 5857 conditions per place. [2024-06-28 03:42:46,909 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 616 selfloop transitions, 170 changer transitions 0/791 dead transitions. [2024-06-28 03:42:46,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 791 transitions, 13513 flow [2024-06-28 03:42:46,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:42:46,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:42:46,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-28 03:42:46,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-06-28 03:42:46,910 INFO L175 Difference]: Start difference. First operand has 461 places, 773 transitions, 11774 flow. Second operand 9 states and 159 transitions. [2024-06-28 03:42:46,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 791 transitions, 13513 flow [2024-06-28 03:42:54,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 791 transitions, 13201 flow, removed 104 selfloop flow, removed 8 redundant places. [2024-06-28 03:42:54,883 INFO L231 Difference]: Finished difference. Result has 462 places, 780 transitions, 11952 flow [2024-06-28 03:42:54,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11462, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=773, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=606, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11952, PETRI_PLACES=462, PETRI_TRANSITIONS=780} [2024-06-28 03:42:54,884 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 421 predicate places. [2024-06-28 03:42:54,884 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 780 transitions, 11952 flow [2024-06-28 03:42:54,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:54,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:54,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:54,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-28 03:42:54,884 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)] === [2024-06-28 03:42:54,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:54,885 INFO L85 PathProgramCache]: Analyzing trace with hash 218304743, now seen corresponding path program 8 times [2024-06-28 03:42:54,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:54,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119313486] [2024-06-28 03:42:54,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:54,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:54,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:55,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:55,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:55,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119313486] [2024-06-28 03:42:55,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119313486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:55,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:55,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:42:55,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582903112] [2024-06-28 03:42:55,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:55,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:42:55,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:55,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:42:55,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:42:55,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:42:55,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 780 transitions, 11952 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:55,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:55,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:42:55,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:57,784 INFO L124 PetriNetUnfolderBase]: 4232/6848 cut-off events. [2024-06-28 03:42:57,784 INFO L125 PetriNetUnfolderBase]: For 1668376/1668378 co-relation queries the response was YES. [2024-06-28 03:42:57,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83728 conditions, 6848 events. 4232/6848 cut-off events. For 1668376/1668378 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 43844 event pairs, 863 based on Foata normal form. 4/6851 useless extension candidates. Maximal degree in co-relation 83509. Up to 5871 conditions per place. [2024-06-28 03:42:57,912 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 623 selfloop transitions, 167 changer transitions 0/795 dead transitions. [2024-06-28 03:42:57,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 795 transitions, 13679 flow [2024-06-28 03:42:57,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:42:57,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:42:57,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-28 03:42:57,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-06-28 03:42:57,913 INFO L175 Difference]: Start difference. First operand has 462 places, 780 transitions, 11952 flow. Second operand 9 states and 159 transitions. [2024-06-28 03:42:57,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 795 transitions, 13679 flow [2024-06-28 03:43:05,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 795 transitions, 13314 flow, removed 46 selfloop flow, removed 4 redundant places. [2024-06-28 03:43:05,409 INFO L231 Difference]: Finished difference. Result has 467 places, 784 transitions, 12051 flow [2024-06-28 03:43:05,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11587, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=780, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=613, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12051, PETRI_PLACES=467, PETRI_TRANSITIONS=784} [2024-06-28 03:43:05,409 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 426 predicate places. [2024-06-28 03:43:05,409 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 784 transitions, 12051 flow [2024-06-28 03:43:05,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:05,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:05,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:05,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-28 03:43:05,410 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)] === [2024-06-28 03:43:05,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:05,410 INFO L85 PathProgramCache]: Analyzing trace with hash 218571653, now seen corresponding path program 9 times [2024-06-28 03:43:05,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:05,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963894209] [2024-06-28 03:43:05,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:05,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:05,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:06,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:06,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:06,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963894209] [2024-06-28 03:43:06,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963894209] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:06,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:06,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:43:06,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16714630] [2024-06-28 03:43:06,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:06,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:43:06,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:06,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:43:06,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:43:06,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:43:06,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 784 transitions, 12051 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:06,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:06,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:43:06,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:08,415 INFO L124 PetriNetUnfolderBase]: 4260/6877 cut-off events. [2024-06-28 03:43:08,415 INFO L125 PetriNetUnfolderBase]: For 1723742/1723744 co-relation queries the response was YES. [2024-06-28 03:43:08,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84793 conditions, 6877 events. 4260/6877 cut-off events. For 1723742/1723744 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 43789 event pairs, 859 based on Foata normal form. 6/6882 useless extension candidates. Maximal degree in co-relation 84573. Up to 5502 conditions per place. [2024-06-28 03:43:08,545 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 499 selfloop transitions, 304 changer transitions 0/808 dead transitions. [2024-06-28 03:43:08,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 808 transitions, 14457 flow [2024-06-28 03:43:08,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:43:08,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:43:08,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-28 03:43:08,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.455 [2024-06-28 03:43:08,546 INFO L175 Difference]: Start difference. First operand has 467 places, 784 transitions, 12051 flow. Second operand 10 states and 182 transitions. [2024-06-28 03:43:08,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 808 transitions, 14457 flow [2024-06-28 03:43:17,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 808 transitions, 14064 flow, removed 47 selfloop flow, removed 5 redundant places. [2024-06-28 03:43:17,298 INFO L231 Difference]: Finished difference. Result has 472 places, 794 transitions, 12732 flow [2024-06-28 03:43:17,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11658, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=784, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=297, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12732, PETRI_PLACES=472, PETRI_TRANSITIONS=794} [2024-06-28 03:43:17,298 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 431 predicate places. [2024-06-28 03:43:17,298 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 794 transitions, 12732 flow [2024-06-28 03:43:17,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:17,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:17,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:17,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-28 03:43:17,299 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)] === [2024-06-28 03:43:17,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:17,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1407062917, now seen corresponding path program 10 times [2024-06-28 03:43:17,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:17,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125066255] [2024-06-28 03:43:17,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:17,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:17,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:18,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:18,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:18,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125066255] [2024-06-28 03:43:18,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125066255] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:18,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:18,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:43:18,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95358601] [2024-06-28 03:43:18,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:18,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:43:18,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:18,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:43:18,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:43:18,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:43:18,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 794 transitions, 12732 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:18,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:18,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:43:18,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:20,369 INFO L124 PetriNetUnfolderBase]: 4255/6877 cut-off events. [2024-06-28 03:43:20,369 INFO L125 PetriNetUnfolderBase]: For 1724849/1724851 co-relation queries the response was YES. [2024-06-28 03:43:20,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85721 conditions, 6877 events. 4255/6877 cut-off events. For 1724849/1724851 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 43907 event pairs, 859 based on Foata normal form. 3/6879 useless extension candidates. Maximal degree in co-relation 85500. Up to 5906 conditions per place. [2024-06-28 03:43:20,495 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 607 selfloop transitions, 193 changer transitions 0/805 dead transitions. [2024-06-28 03:43:20,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 805 transitions, 14364 flow [2024-06-28 03:43:20,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:43:20,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:43:20,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-28 03:43:20,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-28 03:43:20,496 INFO L175 Difference]: Start difference. First operand has 472 places, 794 transitions, 12732 flow. Second operand 9 states and 156 transitions. [2024-06-28 03:43:20,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 805 transitions, 14364 flow [2024-06-28 03:43:29,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 805 transitions, 13668 flow, removed 191 selfloop flow, removed 6 redundant places. [2024-06-28 03:43:29,892 INFO L231 Difference]: Finished difference. Result has 475 places, 794 transitions, 12428 flow [2024-06-28 03:43:29,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12036, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=794, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=601, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12428, PETRI_PLACES=475, PETRI_TRANSITIONS=794} [2024-06-28 03:43:29,899 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 434 predicate places. [2024-06-28 03:43:29,899 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 794 transitions, 12428 flow [2024-06-28 03:43:29,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:29,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:29,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:29,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-28 03:43:29,900 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)] === [2024-06-28 03:43:29,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:29,900 INFO L85 PathProgramCache]: Analyzing trace with hash -717898035, now seen corresponding path program 11 times [2024-06-28 03:43:29,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:29,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620625085] [2024-06-28 03:43:29,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:29,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:29,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:30,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:30,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:30,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620625085] [2024-06-28 03:43:30,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620625085] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:30,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:30,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:43:30,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890201365] [2024-06-28 03:43:30,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:30,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:43:30,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:30,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:43:30,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:43:31,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:43:31,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 794 transitions, 12428 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:31,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:31,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:43:31,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:33,295 INFO L124 PetriNetUnfolderBase]: 4265/6884 cut-off events. [2024-06-28 03:43:33,296 INFO L125 PetriNetUnfolderBase]: For 1750173/1750173 co-relation queries the response was YES. [2024-06-28 03:43:33,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86053 conditions, 6884 events. 4265/6884 cut-off events. For 1750173/1750173 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 43890 event pairs, 927 based on Foata normal form. 2/6884 useless extension candidates. Maximal degree in co-relation 85830. Up to 6393 conditions per place. [2024-06-28 03:43:33,434 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 738 selfloop transitions, 69 changer transitions 0/812 dead transitions. [2024-06-28 03:43:33,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 812 transitions, 14196 flow [2024-06-28 03:43:33,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:43:33,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:43:33,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-28 03:43:33,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-28 03:43:33,435 INFO L175 Difference]: Start difference. First operand has 475 places, 794 transitions, 12428 flow. Second operand 10 states and 170 transitions. [2024-06-28 03:43:33,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 812 transitions, 14196 flow [2024-06-28 03:43:43,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 812 transitions, 13510 flow, removed 19 selfloop flow, removed 12 redundant places. [2024-06-28 03:43:43,579 INFO L231 Difference]: Finished difference. Result has 473 places, 798 transitions, 12004 flow [2024-06-28 03:43:43,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11748, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=794, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=725, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12004, PETRI_PLACES=473, PETRI_TRANSITIONS=798} [2024-06-28 03:43:43,580 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 432 predicate places. [2024-06-28 03:43:43,580 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 798 transitions, 12004 flow [2024-06-28 03:43:43,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:43,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:43,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:43,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-28 03:43:43,581 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)] === [2024-06-28 03:43:43,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:43,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1614334807, now seen corresponding path program 12 times [2024-06-28 03:43:43,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:43,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163469938] [2024-06-28 03:43:43,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:43,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:43,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:44,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:44,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:44,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163469938] [2024-06-28 03:43:44,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163469938] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:44,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:44,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:43:44,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769623641] [2024-06-28 03:43:44,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:44,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:43:44,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:44,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:43:44,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:43:44,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:43:44,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 798 transitions, 12004 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:44,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:44,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:43:44,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:46,814 INFO L124 PetriNetUnfolderBase]: 4286/6925 cut-off events. [2024-06-28 03:43:46,814 INFO L125 PetriNetUnfolderBase]: For 1780639/1780641 co-relation queries the response was YES. [2024-06-28 03:43:46,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85712 conditions, 6925 events. 4286/6925 cut-off events. For 1780639/1780641 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 44373 event pairs, 923 based on Foata normal form. 3/6927 useless extension candidates. Maximal degree in co-relation 85491. Up to 6446 conditions per place. [2024-06-28 03:43:46,946 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 762 selfloop transitions, 58 changer transitions 0/825 dead transitions. [2024-06-28 03:43:46,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 825 transitions, 14174 flow [2024-06-28 03:43:46,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:43:46,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:43:46,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-28 03:43:46,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41363636363636364 [2024-06-28 03:43:46,947 INFO L175 Difference]: Start difference. First operand has 473 places, 798 transitions, 12004 flow. Second operand 11 states and 182 transitions. [2024-06-28 03:43:46,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 825 transitions, 14174 flow [2024-06-28 03:43:56,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 825 transitions, 13963 flow, removed 41 selfloop flow, removed 8 redundant places. [2024-06-28 03:43:56,680 INFO L231 Difference]: Finished difference. Result has 479 places, 810 transitions, 12180 flow [2024-06-28 03:43:56,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11795, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=798, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=744, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12180, PETRI_PLACES=479, PETRI_TRANSITIONS=810} [2024-06-28 03:43:56,680 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 438 predicate places. [2024-06-28 03:43:56,681 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 810 transitions, 12180 flow [2024-06-28 03:43:56,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:56,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:56,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:56,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-28 03:43:56,681 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)] === [2024-06-28 03:43:56,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:56,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1992110387, now seen corresponding path program 13 times [2024-06-28 03:43:56,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:56,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692696396] [2024-06-28 03:43:56,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:56,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:56,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:57,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:57,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:57,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692696396] [2024-06-28 03:43:57,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692696396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:57,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:57,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:43:57,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358331970] [2024-06-28 03:43:57,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:57,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:43:57,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:57,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:43:57,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:43:57,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:43:57,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 810 transitions, 12180 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:57,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:57,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:43:57,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:59,792 INFO L124 PetriNetUnfolderBase]: 4326/6974 cut-off events. [2024-06-28 03:43:59,792 INFO L125 PetriNetUnfolderBase]: For 1799435/1799437 co-relation queries the response was YES. [2024-06-28 03:43:59,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86270 conditions, 6974 events. 4326/6974 cut-off events. For 1799435/1799437 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 44503 event pairs, 925 based on Foata normal form. 4/6977 useless extension candidates. Maximal degree in co-relation 86045. Up to 6421 conditions per place. [2024-06-28 03:43:59,923 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 757 selfloop transitions, 89 changer transitions 0/851 dead transitions. [2024-06-28 03:43:59,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 851 transitions, 14848 flow [2024-06-28 03:43:59,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:43:59,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:43:59,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-28 03:43:59,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43 [2024-06-28 03:43:59,925 INFO L175 Difference]: Start difference. First operand has 479 places, 810 transitions, 12180 flow. Second operand 10 states and 172 transitions. [2024-06-28 03:43:59,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 851 transitions, 14848 flow [2024-06-28 03:44:12,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 851 transitions, 14745 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-28 03:44:12,249 INFO L231 Difference]: Finished difference. Result has 485 places, 830 transitions, 12569 flow [2024-06-28 03:44:12,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12077, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=810, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=733, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12569, PETRI_PLACES=485, PETRI_TRANSITIONS=830} [2024-06-28 03:44:12,249 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 444 predicate places. [2024-06-28 03:44:12,249 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 830 transitions, 12569 flow [2024-06-28 03:44:12,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:12,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:12,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:12,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-28 03:44:12,250 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)] === [2024-06-28 03:44:12,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:12,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1475797423, now seen corresponding path program 14 times [2024-06-28 03:44:12,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:12,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326240223] [2024-06-28 03:44:12,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:12,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:12,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:13,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:13,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:13,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326240223] [2024-06-28 03:44:13,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326240223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:13,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:13,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:44:13,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423930296] [2024-06-28 03:44:13,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:13,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:44:13,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:13,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:44:13,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:44:13,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:44:13,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 830 transitions, 12569 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:13,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:13,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:44:13,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:15,331 INFO L124 PetriNetUnfolderBase]: 4328/6981 cut-off events. [2024-06-28 03:44:15,331 INFO L125 PetriNetUnfolderBase]: For 1813747/1813749 co-relation queries the response was YES. [2024-06-28 03:44:15,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86608 conditions, 6981 events. 4328/6981 cut-off events. For 1813747/1813749 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 44567 event pairs, 925 based on Foata normal form. 4/6984 useless extension candidates. Maximal degree in co-relation 86380. Up to 6515 conditions per place. [2024-06-28 03:44:15,477 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 790 selfloop transitions, 50 changer transitions 0/845 dead transitions. [2024-06-28 03:44:15,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 845 transitions, 14382 flow [2024-06-28 03:44:15,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:44:15,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:44:15,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-28 03:44:15,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2024-06-28 03:44:15,478 INFO L175 Difference]: Start difference. First operand has 485 places, 830 transitions, 12569 flow. Second operand 9 states and 152 transitions. [2024-06-28 03:44:15,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 845 transitions, 14382 flow [2024-06-28 03:44:26,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 845 transitions, 14242 flow, removed 43 selfloop flow, removed 5 redundant places. [2024-06-28 03:44:26,744 INFO L231 Difference]: Finished difference. Result has 489 places, 833 transitions, 12635 flow [2024-06-28 03:44:26,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12429, PETRI_DIFFERENCE_MINUEND_PLACES=480, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=830, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=780, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12635, PETRI_PLACES=489, PETRI_TRANSITIONS=833} [2024-06-28 03:44:26,745 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 448 predicate places. [2024-06-28 03:44:26,745 INFO L495 AbstractCegarLoop]: Abstraction has has 489 places, 833 transitions, 12635 flow [2024-06-28 03:44:26,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:26,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:26,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:26,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-28 03:44:26,745 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)] === [2024-06-28 03:44:26,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:26,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1986396467, now seen corresponding path program 15 times [2024-06-28 03:44:26,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:26,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362443588] [2024-06-28 03:44:26,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:26,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:26,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:27,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:27,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:27,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362443588] [2024-06-28 03:44:27,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362443588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:27,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:27,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:44:27,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676671812] [2024-06-28 03:44:27,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:27,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:44:27,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:27,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:44:27,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:44:27,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:44:27,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 833 transitions, 12635 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:27,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:27,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:44:27,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:30,115 INFO L124 PetriNetUnfolderBase]: 4323/6973 cut-off events. [2024-06-28 03:44:30,116 INFO L125 PetriNetUnfolderBase]: For 1817402/1817404 co-relation queries the response was YES. [2024-06-28 03:44:30,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86571 conditions, 6973 events. 4323/6973 cut-off events. For 1817402/1817404 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 44593 event pairs, 923 based on Foata normal form. 3/6975 useless extension candidates. Maximal degree in co-relation 86341. Up to 6417 conditions per place. [2024-06-28 03:44:30,247 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 755 selfloop transitions, 92 changer transitions 0/852 dead transitions. [2024-06-28 03:44:30,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 852 transitions, 15031 flow [2024-06-28 03:44:30,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:44:30,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:44:30,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-28 03:44:30,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4275 [2024-06-28 03:44:30,249 INFO L175 Difference]: Start difference. First operand has 489 places, 833 transitions, 12635 flow. Second operand 10 states and 171 transitions. [2024-06-28 03:44:30,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 852 transitions, 15031 flow [2024-06-28 03:44:40,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 493 places, 852 transitions, 14869 flow, removed 45 selfloop flow, removed 5 redundant places. [2024-06-28 03:44:40,781 INFO L231 Difference]: Finished difference. Result has 494 places, 835 transitions, 12753 flow [2024-06-28 03:44:40,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12473, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=833, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=742, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12753, PETRI_PLACES=494, PETRI_TRANSITIONS=835} [2024-06-28 03:44:40,782 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 453 predicate places. [2024-06-28 03:44:40,782 INFO L495 AbstractCegarLoop]: Abstraction has has 494 places, 835 transitions, 12753 flow [2024-06-28 03:44:40,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:40,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:40,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:40,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-28 03:44:40,783 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)] === [2024-06-28 03:44:40,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:40,783 INFO L85 PathProgramCache]: Analyzing trace with hash 2051624849, now seen corresponding path program 16 times [2024-06-28 03:44:40,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:40,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626727401] [2024-06-28 03:44:40,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:40,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:40,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:41,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:41,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:41,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626727401] [2024-06-28 03:44:41,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626727401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:41,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:41,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:44:41,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125964148] [2024-06-28 03:44:41,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:41,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:44:41,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:41,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:44:41,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:44:41,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:44:41,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 835 transitions, 12753 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:41,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:41,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:44:41,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:44,426 INFO L124 PetriNetUnfolderBase]: 4320/6967 cut-off events. [2024-06-28 03:44:44,426 INFO L125 PetriNetUnfolderBase]: For 1830310/1830312 co-relation queries the response was YES. [2024-06-28 03:44:44,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86561 conditions, 6967 events. 4320/6967 cut-off events. For 1830310/1830312 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 44517 event pairs, 923 based on Foata normal form. 3/6969 useless extension candidates. Maximal degree in co-relation 86330. Up to 6507 conditions per place. [2024-06-28 03:44:44,564 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 793 selfloop transitions, 51 changer transitions 0/849 dead transitions. [2024-06-28 03:44:44,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 849 transitions, 14485 flow [2024-06-28 03:44:44,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:44:44,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:44:44,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-28 03:44:44,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4068181818181818 [2024-06-28 03:44:44,566 INFO L175 Difference]: Start difference. First operand has 494 places, 835 transitions, 12753 flow. Second operand 11 states and 179 transitions. [2024-06-28 03:44:44,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 849 transitions, 14485 flow [2024-06-28 03:44:51,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 849 transitions, 14290 flow, removed 64 selfloop flow, removed 6 redundant places. [2024-06-28 03:44:51,634 INFO L231 Difference]: Finished difference. Result has 499 places, 835 transitions, 12666 flow [2024-06-28 03:44:51,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12558, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=835, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=784, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12666, PETRI_PLACES=499, PETRI_TRANSITIONS=835} [2024-06-28 03:44:51,635 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 458 predicate places. [2024-06-28 03:44:51,635 INFO L495 AbstractCegarLoop]: Abstraction has has 499 places, 835 transitions, 12666 flow [2024-06-28 03:44:51,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:51,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:51,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:51,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-28 03:44:51,636 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)] === [2024-06-28 03:44:51,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:51,636 INFO L85 PathProgramCache]: Analyzing trace with hash -281913625, now seen corresponding path program 17 times [2024-06-28 03:44:51,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:51,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474168371] [2024-06-28 03:44:51,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:51,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:51,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:52,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:52,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:52,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474168371] [2024-06-28 03:44:52,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474168371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:52,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:52,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:44:52,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547912076] [2024-06-28 03:44:52,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:52,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:44:52,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:52,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:44:52,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:44:52,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:44:52,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 835 transitions, 12666 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:52,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:52,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:44:52,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:55,294 INFO L124 PetriNetUnfolderBase]: 4312/6957 cut-off events. [2024-06-28 03:44:55,294 INFO L125 PetriNetUnfolderBase]: For 1842300/1842302 co-relation queries the response was YES. [2024-06-28 03:44:55,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86284 conditions, 6957 events. 4312/6957 cut-off events. For 1842300/1842302 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 44458 event pairs, 925 based on Foata normal form. 4/6960 useless extension candidates. Maximal degree in co-relation 86052. Up to 6457 conditions per place. [2024-06-28 03:44:55,443 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 782 selfloop transitions, 62 changer transitions 0/849 dead transitions. [2024-06-28 03:44:55,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 849 transitions, 14410 flow [2024-06-28 03:44:55,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:44:55,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:44:55,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 03:44:55,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-28 03:44:55,445 INFO L175 Difference]: Start difference. First operand has 499 places, 835 transitions, 12666 flow. Second operand 9 states and 153 transitions. [2024-06-28 03:44:55,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 849 transitions, 14410 flow [2024-06-28 03:45:05,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 849 transitions, 14194 flow, removed 41 selfloop flow, removed 11 redundant places. [2024-06-28 03:45:05,914 INFO L231 Difference]: Finished difference. Result has 497 places, 835 transitions, 12582 flow [2024-06-28 03:45:05,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12450, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=835, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=773, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12582, PETRI_PLACES=497, PETRI_TRANSITIONS=835} [2024-06-28 03:45:05,915 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 456 predicate places. [2024-06-28 03:45:05,915 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 835 transitions, 12582 flow [2024-06-28 03:45:05,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:05,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:05,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:05,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-28 03:45:05,916 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)] === [2024-06-28 03:45:05,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:05,916 INFO L85 PathProgramCache]: Analyzing trace with hash -282303884, now seen corresponding path program 7 times [2024-06-28 03:45:05,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:05,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526471062] [2024-06-28 03:45:05,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:05,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:05,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:06,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:06,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:06,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526471062] [2024-06-28 03:45:06,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526471062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:06,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:06,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:45:06,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426415795] [2024-06-28 03:45:06,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:06,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:45:06,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:06,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:45:06,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:45:06,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:45:06,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 835 transitions, 12582 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:06,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:06,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:45:06,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:09,503 INFO L124 PetriNetUnfolderBase]: 4356/7019 cut-off events. [2024-06-28 03:45:09,503 INFO L125 PetriNetUnfolderBase]: For 1973505/1973507 co-relation queries the response was YES. [2024-06-28 03:45:09,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87419 conditions, 7019 events. 4356/7019 cut-off events. For 1973505/1973507 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 44842 event pairs, 927 based on Foata normal form. 14/7032 useless extension candidates. Maximal degree in co-relation 87186. Up to 6462 conditions per place. [2024-06-28 03:45:09,647 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 771 selfloop transitions, 78 changer transitions 0/854 dead transitions. [2024-06-28 03:45:09,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 854 transitions, 14594 flow [2024-06-28 03:45:09,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:45:09,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:45:09,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-28 03:45:09,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-06-28 03:45:09,649 INFO L175 Difference]: Start difference. First operand has 497 places, 835 transitions, 12582 flow. Second operand 9 states and 159 transitions. [2024-06-28 03:45:09,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 854 transitions, 14594 flow [2024-06-28 03:45:19,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 854 transitions, 14416 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 03:45:19,964 INFO L231 Difference]: Finished difference. Result has 497 places, 837 transitions, 12709 flow [2024-06-28 03:45:19,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12404, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=835, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=757, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12709, PETRI_PLACES=497, PETRI_TRANSITIONS=837} [2024-06-28 03:45:19,969 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 456 predicate places. [2024-06-28 03:45:19,969 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 837 transitions, 12709 flow [2024-06-28 03:45:19,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:19,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:19,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:19,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-28 03:45:19,970 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)] === [2024-06-28 03:45:19,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:19,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1920112038, now seen corresponding path program 8 times [2024-06-28 03:45:19,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:19,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653561964] [2024-06-28 03:45:19,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:19,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:19,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:20,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:20,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:20,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653561964] [2024-06-28 03:45:20,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653561964] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:20,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:20,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:45:20,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079634649] [2024-06-28 03:45:20,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:20,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:45:20,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:20,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:45:20,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:45:20,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:45:20,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 837 transitions, 12709 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:20,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:20,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:45:20,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:23,379 INFO L124 PetriNetUnfolderBase]: 4400/7092 cut-off events. [2024-06-28 03:45:23,379 INFO L125 PetriNetUnfolderBase]: For 2011575/2011577 co-relation queries the response was YES. [2024-06-28 03:45:23,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88845 conditions, 7092 events. 4400/7092 cut-off events. For 2011575/2011577 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 45346 event pairs, 871 based on Foata normal form. 14/7105 useless extension candidates. Maximal degree in co-relation 88612. Up to 5749 conditions per place. [2024-06-28 03:45:23,618 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 572 selfloop transitions, 278 changer transitions 0/855 dead transitions. [2024-06-28 03:45:23,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 855 transitions, 14719 flow [2024-06-28 03:45:23,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:45:23,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:45:23,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-28 03:45:23,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4475 [2024-06-28 03:45:23,620 INFO L175 Difference]: Start difference. First operand has 497 places, 837 transitions, 12709 flow. Second operand 10 states and 179 transitions. [2024-06-28 03:45:23,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 506 places, 855 transitions, 14719 flow [2024-06-28 03:45:31,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 855 transitions, 14472 flow, removed 48 selfloop flow, removed 7 redundant places. [2024-06-28 03:45:31,542 INFO L231 Difference]: Finished difference. Result has 500 places, 839 transitions, 13171 flow [2024-06-28 03:45:31,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12462, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=837, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=276, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=559, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13171, PETRI_PLACES=500, PETRI_TRANSITIONS=839} [2024-06-28 03:45:31,542 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 459 predicate places. [2024-06-28 03:45:31,542 INFO L495 AbstractCegarLoop]: Abstraction has has 500 places, 839 transitions, 13171 flow [2024-06-28 03:45:31,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:31,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:31,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:31,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-28 03:45:31,543 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)] === [2024-06-28 03:45:31,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:31,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1930836798, now seen corresponding path program 9 times [2024-06-28 03:45:31,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:31,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46576331] [2024-06-28 03:45:31,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:31,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:31,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:32,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:32,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:32,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46576331] [2024-06-28 03:45:32,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46576331] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:32,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:32,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:45:32,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64539297] [2024-06-28 03:45:32,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:32,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:45:32,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:32,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:45:32,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:45:32,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:45:32,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 839 transitions, 13171 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:32,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:32,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:45:32,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:34,965 INFO L124 PetriNetUnfolderBase]: 4444/7162 cut-off events. [2024-06-28 03:45:34,965 INFO L125 PetriNetUnfolderBase]: For 2043029/2043031 co-relation queries the response was YES. [2024-06-28 03:45:35,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90507 conditions, 7162 events. 4444/7162 cut-off events. For 2043029/2043031 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 45864 event pairs, 879 based on Foata normal form. 14/7175 useless extension candidates. Maximal degree in co-relation 90273. Up to 5817 conditions per place. [2024-06-28 03:45:35,103 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 562 selfloop transitions, 290 changer transitions 0/857 dead transitions. [2024-06-28 03:45:35,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 857 transitions, 15189 flow [2024-06-28 03:45:35,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:45:35,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:45:35,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-28 03:45:35,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4475 [2024-06-28 03:45:35,104 INFO L175 Difference]: Start difference. First operand has 500 places, 839 transitions, 13171 flow. Second operand 10 states and 179 transitions. [2024-06-28 03:45:35,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 857 transitions, 15189 flow [2024-06-28 03:45:43,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 857 transitions, 14538 flow, removed 50 selfloop flow, removed 8 redundant places. [2024-06-28 03:45:43,656 INFO L231 Difference]: Finished difference. Result has 502 places, 841 transitions, 13257 flow [2024-06-28 03:45:43,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12520, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=839, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=288, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=549, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13257, PETRI_PLACES=502, PETRI_TRANSITIONS=841} [2024-06-28 03:45:43,657 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 461 predicate places. [2024-06-28 03:45:43,657 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 841 transitions, 13257 flow [2024-06-28 03:45:43,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:43,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:43,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:43,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-28 03:45:43,658 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)] === [2024-06-28 03:45:43,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:43,658 INFO L85 PathProgramCache]: Analyzing trace with hash 207130204, now seen corresponding path program 10 times [2024-06-28 03:45:43,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:43,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133889974] [2024-06-28 03:45:43,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:43,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:43,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:44,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:44,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:44,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133889974] [2024-06-28 03:45:44,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133889974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:44,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:44,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:45:44,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271087569] [2024-06-28 03:45:44,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:44,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:45:44,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:44,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:45:44,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:45:44,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:45:44,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 841 transitions, 13257 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:44,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:44,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:45:44,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:47,305 INFO L124 PetriNetUnfolderBase]: 4475/7201 cut-off events. [2024-06-28 03:45:47,306 INFO L125 PetriNetUnfolderBase]: For 2041671/2041673 co-relation queries the response was YES. [2024-06-28 03:45:47,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90785 conditions, 7201 events. 4475/7201 cut-off events. For 2041671/2041673 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 46129 event pairs, 873 based on Foata normal form. 14/7214 useless extension candidates. Maximal degree in co-relation 90550. Up to 5658 conditions per place. [2024-06-28 03:45:47,459 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 563 selfloop transitions, 296 changer transitions 0/864 dead transitions. [2024-06-28 03:45:47,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 864 transitions, 15429 flow [2024-06-28 03:45:47,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:45:47,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:45:47,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-28 03:45:47,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.455 [2024-06-28 03:45:47,460 INFO L175 Difference]: Start difference. First operand has 502 places, 841 transitions, 13257 flow. Second operand 10 states and 182 transitions. [2024-06-28 03:45:47,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 864 transitions, 15429 flow [2024-06-28 03:45:56,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 864 transitions, 14750 flow, removed 52 selfloop flow, removed 8 redundant places. [2024-06-28 03:45:56,886 INFO L231 Difference]: Finished difference. Result has 504 places, 843 transitions, 13329 flow [2024-06-28 03:45:56,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12578, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=841, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=294, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=545, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13329, PETRI_PLACES=504, PETRI_TRANSITIONS=843} [2024-06-28 03:45:56,887 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 463 predicate places. [2024-06-28 03:45:56,887 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 843 transitions, 13329 flow [2024-06-28 03:45:56,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:56,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:56,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:56,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-28 03:45:56,888 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)] === [2024-06-28 03:45:56,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:56,888 INFO L85 PathProgramCache]: Analyzing trace with hash -282291980, now seen corresponding path program 6 times [2024-06-28 03:45:56,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:56,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531625444] [2024-06-28 03:45:56,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:56,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:56,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:58,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:58,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:58,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531625444] [2024-06-28 03:45:58,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531625444] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:58,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:58,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:45:58,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170110100] [2024-06-28 03:45:58,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:58,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:45:58,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:58,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:45:58,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:45:58,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:45:58,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 843 transitions, 13329 flow. Second operand has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 12 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:58,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:58,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:45:58,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:00,961 INFO L124 PetriNetUnfolderBase]: 4642/7489 cut-off events. [2024-06-28 03:46:00,961 INFO L125 PetriNetUnfolderBase]: For 2406088/2406090 co-relation queries the response was YES. [2024-06-28 03:46:01,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94068 conditions, 7489 events. 4642/7489 cut-off events. For 2406088/2406090 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 48545 event pairs, 1023 based on Foata normal form. 44/7530 useless extension candidates. Maximal degree in co-relation 93832. Up to 6689 conditions per place. [2024-06-28 03:46:01,105 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 778 selfloop transitions, 76 changer transitions 13/872 dead transitions. [2024-06-28 03:46:01,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 872 transitions, 15467 flow [2024-06-28 03:46:01,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:46:01,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:46:01,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-06-28 03:46:01,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4425 [2024-06-28 03:46:01,106 INFO L175 Difference]: Start difference. First operand has 504 places, 843 transitions, 13329 flow. Second operand 10 states and 177 transitions. [2024-06-28 03:46:01,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 872 transitions, 15467 flow [2024-06-28 03:46:12,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 872 transitions, 14768 flow, removed 54 selfloop flow, removed 8 redundant places. [2024-06-28 03:46:12,396 INFO L231 Difference]: Finished difference. Result has 507 places, 841 transitions, 12908 flow [2024-06-28 03:46:12,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12632, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=843, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=767, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12908, PETRI_PLACES=507, PETRI_TRANSITIONS=841} [2024-06-28 03:46:12,396 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 466 predicate places. [2024-06-28 03:46:12,396 INFO L495 AbstractCegarLoop]: Abstraction has has 507 places, 841 transitions, 12908 flow [2024-06-28 03:46:12,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 12 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:12,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:12,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:46:12,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-28 03:46:12,397 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)] === [2024-06-28 03:46:12,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:12,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1874756674, now seen corresponding path program 7 times [2024-06-28 03:46:12,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:12,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976153033] [2024-06-28 03:46:12,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:12,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:12,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:13,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:13,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:13,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976153033] [2024-06-28 03:46:13,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976153033] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:13,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:13,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:46:13,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488099158] [2024-06-28 03:46:13,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:13,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:46:13,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:13,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:46:13,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:46:13,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:46:13,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 841 transitions, 12908 flow. Second operand has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 12 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:13,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:13,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:46:13,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:16,854 INFO L124 PetriNetUnfolderBase]: 4743/7667 cut-off events. [2024-06-28 03:46:16,854 INFO L125 PetriNetUnfolderBase]: For 2567759/2567759 co-relation queries the response was YES. [2024-06-28 03:46:16,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96325 conditions, 7667 events. 4743/7667 cut-off events. For 2567759/2567759 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 50025 event pairs, 1046 based on Foata normal form. 52/7715 useless extension candidates. Maximal degree in co-relation 96087. Up to 6654 conditions per place. [2024-06-28 03:46:16,995 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 750 selfloop transitions, 123 changer transitions 9/887 dead transitions. [2024-06-28 03:46:16,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 517 places, 887 transitions, 15859 flow [2024-06-28 03:46:16,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:46:16,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:46:16,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 197 transitions. [2024-06-28 03:46:16,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44772727272727275 [2024-06-28 03:46:16,997 INFO L175 Difference]: Start difference. First operand has 507 places, 841 transitions, 12908 flow. Second operand 11 states and 197 transitions. [2024-06-28 03:46:16,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 517 places, 887 transitions, 15859 flow [2024-06-28 03:46:28,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 887 transitions, 15606 flow, removed 56 selfloop flow, removed 7 redundant places. [2024-06-28 03:46:28,378 INFO L231 Difference]: Finished difference. Result has 514 places, 856 transitions, 13356 flow [2024-06-28 03:46:28,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12655, PETRI_DIFFERENCE_MINUEND_PLACES=500, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=841, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=718, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13356, PETRI_PLACES=514, PETRI_TRANSITIONS=856} [2024-06-28 03:46:28,379 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 473 predicate places. [2024-06-28 03:46:28,379 INFO L495 AbstractCegarLoop]: Abstraction has has 514 places, 856 transitions, 13356 flow [2024-06-28 03:46:28,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 12 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:28,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:28,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:46:28,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-28 03:46:28,380 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)] === [2024-06-28 03:46:28,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:28,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1919725344, now seen corresponding path program 8 times [2024-06-28 03:46:28,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:28,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660846641] [2024-06-28 03:46:28,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:28,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:28,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:29,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:29,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:29,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660846641] [2024-06-28 03:46:29,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660846641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:29,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:29,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:46:29,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345111072] [2024-06-28 03:46:29,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:29,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:46:29,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:29,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:46:29,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:46:29,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:46:29,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 856 transitions, 13356 flow. Second operand has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 12 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:29,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:29,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:46:29,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:32,649 INFO L124 PetriNetUnfolderBase]: 4941/7992 cut-off events. [2024-06-28 03:46:32,650 INFO L125 PetriNetUnfolderBase]: For 2749859/2749859 co-relation queries the response was YES. [2024-06-28 03:46:32,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103169 conditions, 7992 events. 4941/7992 cut-off events. For 2749859/2749859 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 52600 event pairs, 1076 based on Foata normal form. 53/8037 useless extension candidates. Maximal degree in co-relation 102927. Up to 6003 conditions per place. [2024-06-28 03:46:32,945 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 515 selfloop transitions, 364 changer transitions 14/898 dead transitions. [2024-06-28 03:46:32,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 524 places, 898 transitions, 17242 flow [2024-06-28 03:46:32,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:46:32,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:46:32,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 207 transitions. [2024-06-28 03:46:32,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47045454545454546 [2024-06-28 03:46:32,947 INFO L175 Difference]: Start difference. First operand has 514 places, 856 transitions, 13356 flow. Second operand 11 states and 207 transitions. [2024-06-28 03:46:32,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 524 places, 898 transitions, 17242 flow [2024-06-28 03:46:44,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 898 transitions, 16933 flow, removed 64 selfloop flow, removed 8 redundant places. [2024-06-28 03:46:44,138 INFO L231 Difference]: Finished difference. Result has 521 places, 863 transitions, 14751 flow [2024-06-28 03:46:44,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=13063, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=856, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=351, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=500, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14751, PETRI_PLACES=521, PETRI_TRANSITIONS=863} [2024-06-28 03:46:44,139 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 480 predicate places. [2024-06-28 03:46:44,139 INFO L495 AbstractCegarLoop]: Abstraction has has 521 places, 863 transitions, 14751 flow [2024-06-28 03:46:44,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 12 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:44,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:44,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:46:44,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-28 03:46:44,139 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)] === [2024-06-28 03:46:44,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:44,140 INFO L85 PathProgramCache]: Analyzing trace with hash 146192500, now seen corresponding path program 9 times [2024-06-28 03:46:44,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:44,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457429898] [2024-06-28 03:46:44,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:44,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:44,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:45,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:45,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:45,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457429898] [2024-06-28 03:46:45,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457429898] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:45,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:45,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:46:45,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359878160] [2024-06-28 03:46:45,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:45,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:46:45,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:45,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:46:45,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:46:45,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:46:45,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 521 places, 863 transitions, 14751 flow. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:45,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:45,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:46:45,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:48,798 INFO L124 PetriNetUnfolderBase]: 5375/8747 cut-off events. [2024-06-28 03:46:48,798 INFO L125 PetriNetUnfolderBase]: For 3449376/3449378 co-relation queries the response was YES. [2024-06-28 03:46:49,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125259 conditions, 8747 events. 5375/8747 cut-off events. For 3449376/3449378 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 58917 event pairs, 1231 based on Foata normal form. 44/8788 useless extension candidates. Maximal degree in co-relation 125013. Up to 6769 conditions per place. [2024-06-28 03:46:49,105 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 742 selfloop transitions, 152 changer transitions 0/899 dead transitions. [2024-06-28 03:46:49,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 899 transitions, 18005 flow [2024-06-28 03:46:49,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:46:49,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:46:49,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 201 transitions. [2024-06-28 03:46:49,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45681818181818185 [2024-06-28 03:46:49,106 INFO L175 Difference]: Start difference. First operand has 521 places, 863 transitions, 14751 flow. Second operand 11 states and 201 transitions. [2024-06-28 03:46:49,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 899 transitions, 18005 flow [2024-06-28 03:47:02,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 899 transitions, 17168 flow, removed 246 selfloop flow, removed 7 redundant places. [2024-06-28 03:47:02,675 INFO L231 Difference]: Finished difference. Result has 526 places, 867 transitions, 14529 flow [2024-06-28 03:47:02,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=13918, PETRI_DIFFERENCE_MINUEND_PLACES=514, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=863, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=712, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14529, PETRI_PLACES=526, PETRI_TRANSITIONS=867} [2024-06-28 03:47:02,676 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 485 predicate places. [2024-06-28 03:47:02,676 INFO L495 AbstractCegarLoop]: Abstraction has has 526 places, 867 transitions, 14529 flow [2024-06-28 03:47:02,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:02,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:02,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:47:02,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-28 03:47:02,677 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)] === [2024-06-28 03:47:02,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:02,677 INFO L85 PathProgramCache]: Analyzing trace with hash 218581108, now seen corresponding path program 10 times [2024-06-28 03:47:02,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:02,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004697686] [2024-06-28 03:47:02,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:02,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:02,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:03,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:03,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:03,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004697686] [2024-06-28 03:47:03,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004697686] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:03,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:03,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:47:03,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852036125] [2024-06-28 03:47:03,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:03,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:47:03,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:03,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:47:03,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:47:03,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:47:03,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 867 transitions, 14529 flow. Second operand has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 12 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:03,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:03,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:47:03,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:07,966 INFO L124 PetriNetUnfolderBase]: 5909/9628 cut-off events. [2024-06-28 03:47:07,966 INFO L125 PetriNetUnfolderBase]: For 4201254/4201254 co-relation queries the response was YES. [2024-06-28 03:47:08,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146052 conditions, 9628 events. 5909/9628 cut-off events. For 4201254/4201254 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 66123 event pairs, 1452 based on Foata normal form. 42/9660 useless extension candidates. Maximal degree in co-relation 145804. Up to 6711 conditions per place. [2024-06-28 03:47:08,156 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 547 selfloop transitions, 352 changer transitions 0/904 dead transitions. [2024-06-28 03:47:08,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 535 places, 904 transitions, 18417 flow [2024-06-28 03:47:08,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:47:08,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:47:08,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 195 transitions. [2024-06-28 03:47:08,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4875 [2024-06-28 03:47:08,158 INFO L175 Difference]: Start difference. First operand has 526 places, 867 transitions, 14529 flow. Second operand 10 states and 195 transitions. [2024-06-28 03:47:08,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 535 places, 904 transitions, 18417 flow [2024-06-28 03:47:22,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 904 transitions, 18121 flow, removed 52 selfloop flow, removed 7 redundant places. [2024-06-28 03:47:22,376 INFO L231 Difference]: Finished difference. Result has 530 places, 871 transitions, 15249 flow [2024-06-28 03:47:22,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=14233, PETRI_DIFFERENCE_MINUEND_PLACES=519, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=867, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=349, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=516, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15249, PETRI_PLACES=530, PETRI_TRANSITIONS=871} [2024-06-28 03:47:22,377 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 489 predicate places. [2024-06-28 03:47:22,377 INFO L495 AbstractCegarLoop]: Abstraction has has 530 places, 871 transitions, 15249 flow [2024-06-28 03:47:22,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 12 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:22,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:22,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:47:22,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-28 03:47:22,378 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)] === [2024-06-28 03:47:22,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:22,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1992113952, now seen corresponding path program 11 times [2024-06-28 03:47:22,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:22,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575917539] [2024-06-28 03:47:22,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:22,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:22,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:23,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:23,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:23,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575917539] [2024-06-28 03:47:23,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575917539] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:23,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:23,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:47:23,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161518482] [2024-06-28 03:47:23,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:23,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:47:23,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:23,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:47:23,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:47:23,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:47:23,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 530 places, 871 transitions, 15249 flow. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:23,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:23,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:47:23,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:28,058 INFO L124 PetriNetUnfolderBase]: 6020/9834 cut-off events. [2024-06-28 03:47:28,058 INFO L125 PetriNetUnfolderBase]: For 4211324/4211326 co-relation queries the response was YES. [2024-06-28 03:47:28,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147751 conditions, 9834 events. 6020/9834 cut-off events. For 4211324/4211326 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 68139 event pairs, 1652 based on Foata normal form. 44/9875 useless extension candidates. Maximal degree in co-relation 147500. Up to 8496 conditions per place. [2024-06-28 03:47:28,284 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 716 selfloop transitions, 175 changer transitions 0/896 dead transitions. [2024-06-28 03:47:28,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 896 transitions, 17710 flow [2024-06-28 03:47:28,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:47:28,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:47:28,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 209 transitions. [2024-06-28 03:47:28,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4354166666666667 [2024-06-28 03:47:28,286 INFO L175 Difference]: Start difference. First operand has 530 places, 871 transitions, 15249 flow. Second operand 12 states and 209 transitions. [2024-06-28 03:47:28,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 896 transitions, 17710 flow [2024-06-28 03:47:46,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 535 places, 896 transitions, 17185 flow, removed 56 selfloop flow, removed 6 redundant places. [2024-06-28 03:47:46,254 INFO L231 Difference]: Finished difference. Result has 536 places, 873 transitions, 15241 flow [2024-06-28 03:47:46,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=14724, PETRI_DIFFERENCE_MINUEND_PLACES=524, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=871, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=696, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=15241, PETRI_PLACES=536, PETRI_TRANSITIONS=873} [2024-06-28 03:47:46,255 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 495 predicate places. [2024-06-28 03:47:46,255 INFO L495 AbstractCegarLoop]: Abstraction has has 536 places, 873 transitions, 15241 flow [2024-06-28 03:47:46,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:46,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:46,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:47:46,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-28 03:47:46,256 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)] === [2024-06-28 03:47:46,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:46,256 INFO L85 PathProgramCache]: Analyzing trace with hash 160924630, now seen corresponding path program 12 times [2024-06-28 03:47:46,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:46,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956061575] [2024-06-28 03:47:46,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:46,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:46,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:47,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:47,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:47,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956061575] [2024-06-28 03:47:47,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956061575] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:47,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:47,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:47:47,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745414739] [2024-06-28 03:47:47,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:47,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:47:47,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:47,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:47:47,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:47:47,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:47:47,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 873 transitions, 15241 flow. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:47,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:47,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:47:47,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:51,574 INFO L124 PetriNetUnfolderBase]: 6250/10248 cut-off events. [2024-06-28 03:47:51,575 INFO L125 PetriNetUnfolderBase]: For 4315885/4315887 co-relation queries the response was YES. [2024-06-28 03:47:51,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154814 conditions, 10248 events. 6250/10248 cut-off events. For 4315885/4315887 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 71450 event pairs, 1645 based on Foata normal form. 44/10289 useless extension candidates. Maximal degree in co-relation 154561. Up to 7374 conditions per place. [2024-06-28 03:47:51,793 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 753 selfloop transitions, 160 changer transitions 0/918 dead transitions. [2024-06-28 03:47:51,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 546 places, 918 transitions, 18989 flow [2024-06-28 03:47:51,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:47:51,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:47:51,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 209 transitions. [2024-06-28 03:47:51,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-06-28 03:47:51,794 INFO L175 Difference]: Start difference. First operand has 536 places, 873 transitions, 15241 flow. Second operand 11 states and 209 transitions. [2024-06-28 03:47:51,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 546 places, 918 transitions, 18989 flow [2024-06-28 03:48:11,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 536 places, 918 transitions, 18561 flow, removed 49 selfloop flow, removed 10 redundant places. [2024-06-28 03:48:11,858 INFO L231 Difference]: Finished difference. Result has 538 places, 877 transitions, 15419 flow [2024-06-28 03:48:11,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=14813, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=873, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=714, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=15419, PETRI_PLACES=538, PETRI_TRANSITIONS=877} [2024-06-28 03:48:11,859 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 497 predicate places. [2024-06-28 03:48:11,859 INFO L495 AbstractCegarLoop]: Abstraction has has 538 places, 877 transitions, 15419 flow [2024-06-28 03:48:11,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:11,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:11,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:48:11,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-28 03:48:11,860 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)] === [2024-06-28 03:48:11,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:11,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1930824894, now seen corresponding path program 13 times [2024-06-28 03:48:11,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:11,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767738809] [2024-06-28 03:48:11,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:11,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:11,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:12,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:12,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:12,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767738809] [2024-06-28 03:48:12,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767738809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:12,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:12,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:48:12,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398930405] [2024-06-28 03:48:12,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:12,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:48:12,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:12,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:48:12,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:48:13,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:48:13,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 877 transitions, 15419 flow. Second operand has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 12 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:13,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:13,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:48:13,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:17,345 INFO L124 PetriNetUnfolderBase]: 6341/10400 cut-off events. [2024-06-28 03:48:17,345 INFO L125 PetriNetUnfolderBase]: For 4330409/4330411 co-relation queries the response was YES. [2024-06-28 03:48:17,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155067 conditions, 10400 events. 6341/10400 cut-off events. For 4330409/4330411 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 73158 event pairs, 1805 based on Foata normal form. 45/10442 useless extension candidates. Maximal degree in co-relation 154812. Up to 8735 conditions per place. [2024-06-28 03:48:17,564 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 612 selfloop transitions, 274 changer transitions 10/901 dead transitions. [2024-06-28 03:48:17,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 547 places, 901 transitions, 17685 flow [2024-06-28 03:48:17,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:48:17,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:48:17,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-28 03:48:17,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4625 [2024-06-28 03:48:17,565 INFO L175 Difference]: Start difference. First operand has 538 places, 877 transitions, 15419 flow. Second operand 10 states and 185 transitions. [2024-06-28 03:48:17,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 547 places, 901 transitions, 17685 flow [2024-06-28 03:48:33,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 539 places, 901 transitions, 17246 flow, removed 62 selfloop flow, removed 8 redundant places. [2024-06-28 03:48:33,507 INFO L231 Difference]: Finished difference. Result has 541 places, 874 transitions, 15640 flow [2024-06-28 03:48:33,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=14980, PETRI_DIFFERENCE_MINUEND_PLACES=530, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=877, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=272, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=603, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15640, PETRI_PLACES=541, PETRI_TRANSITIONS=874} [2024-06-28 03:48:33,508 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 500 predicate places. [2024-06-28 03:48:33,508 INFO L495 AbstractCegarLoop]: Abstraction has has 541 places, 874 transitions, 15640 flow [2024-06-28 03:48:33,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 12 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:33,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:33,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:48:33,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-28 03:48:33,509 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)] === [2024-06-28 03:48:33,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:33,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1746324706, now seen corresponding path program 1 times [2024-06-28 03:48:33,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:33,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487428019] [2024-06-28 03:48:33,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:33,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:33,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:34,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:34,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:34,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487428019] [2024-06-28 03:48:34,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487428019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:34,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:34,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:48:34,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425400228] [2024-06-28 03:48:34,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:34,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:48:34,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:34,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:48:34,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:48:34,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 03:48:34,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 541 places, 874 transitions, 15640 flow. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:34,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:34,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 03:48:34,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:38,926 INFO L124 PetriNetUnfolderBase]: 6259/10265 cut-off events. [2024-06-28 03:48:38,926 INFO L125 PetriNetUnfolderBase]: For 4017172/4017172 co-relation queries the response was YES. [2024-06-28 03:48:39,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153463 conditions, 10265 events. 6259/10265 cut-off events. For 4017172/4017172 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 72020 event pairs, 1828 based on Foata normal form. 8/10272 useless extension candidates. Maximal degree in co-relation 153206. Up to 9682 conditions per place. [2024-06-28 03:48:39,174 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 868 selfloop transitions, 26 changer transitions 0/899 dead transitions. [2024-06-28 03:48:39,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 899 transitions, 17652 flow [2024-06-28 03:48:39,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:48:39,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:48:39,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-28 03:48:39,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42 [2024-06-28 03:48:39,176 INFO L175 Difference]: Start difference. First operand has 541 places, 874 transitions, 15640 flow. Second operand 10 states and 168 transitions. [2024-06-28 03:48:39,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 899 transitions, 17652 flow [2024-06-28 03:48:58,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 540 places, 899 transitions, 16982 flow, removed 60 selfloop flow, removed 10 redundant places. [2024-06-28 03:48:58,570 INFO L231 Difference]: Finished difference. Result has 541 places, 876 transitions, 15077 flow [2024-06-28 03:48:58,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=14970, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=874, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=848, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15077, PETRI_PLACES=541, PETRI_TRANSITIONS=876} [2024-06-28 03:48:58,571 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 500 predicate places. [2024-06-28 03:48:58,582 INFO L495 AbstractCegarLoop]: Abstraction has has 541 places, 876 transitions, 15077 flow [2024-06-28 03:48:58,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:58,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:58,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:48:58,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-28 03:48:58,586 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)] === [2024-06-28 03:48:58,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:58,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1337217070, now seen corresponding path program 2 times [2024-06-28 03:48:58,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:58,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527136798] [2024-06-28 03:48:58,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:58,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:58,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Killed by 15