./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix057_power.oepc_pso.oepc_rmo.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/mix057_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bcb38a6f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix057_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-05-21_14-57-05.files/protection/mix057_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-bcb38a6-m [2024-06-03 19:56:14,918 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-03 19:56:14,994 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-03 19:56:14,999 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-03 19:56:14,999 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-03 19:56:15,030 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-03 19:56:15,031 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-03 19:56:15,031 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-03 19:56:15,032 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-03 19:56:15,036 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-03 19:56:15,036 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-03 19:56:15,036 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-03 19:56:15,037 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-03 19:56:15,039 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-03 19:56:15,039 INFO L153 SettingsManager]: * Use SBE=true [2024-06-03 19:56:15,039 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-03 19:56:15,039 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-03 19:56:15,040 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-03 19:56:15,040 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-03 19:56:15,040 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-03 19:56:15,041 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-03 19:56:15,041 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-03 19:56:15,041 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-03 19:56:15,041 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-03 19:56:15,042 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-03 19:56:15,042 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-03 19:56:15,042 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-03 19:56:15,042 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-03 19:56:15,043 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-03 19:56:15,043 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-03 19:56:15,044 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-03 19:56:15,044 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-03 19:56:15,045 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 19:56:15,054 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-03 19:56:15,054 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-03 19:56:15,054 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-03 19:56:15,055 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-03 19:56:15,055 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-03 19:56:15,055 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-03 19:56:15,055 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-03 19:56:15,056 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-03 19:56:15,056 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-03 19:56:15,056 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-03 19:56:15,056 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-03 19:56:15,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-03 19:56:15,340 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-03 19:56:15,344 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-03 19:56:15,345 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-03 19:56:15,346 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-03 19:56:15,347 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/mix057_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-03 19:56:15,574 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-03 19:56:15,574 INFO L274 PluginConnector]: CDTParser initialized [2024-06-03 19:56:15,574 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix057_power.oepc_pso.oepc_rmo.oepc.i [2024-06-03 19:56:16,705 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-03 19:56:16,951 INFO L384 CDTParser]: Found 1 translation units. [2024-06-03 19:56:16,951 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix057_power.oepc_pso.oepc_rmo.oepc.i [2024-06-03 19:56:16,964 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59b838b13/1c072d5ebbeb4cb28e234ac1abd61453/FLAGded28c805 [2024-06-03 19:56:16,975 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59b838b13/1c072d5ebbeb4cb28e234ac1abd61453 [2024-06-03 19:56:16,976 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-03 19:56:16,977 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-03 19:56:16,978 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-03 19:56:16,979 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-03 19:56:16,983 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-03 19:56:16,983 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 07:56:15" (1/2) ... [2024-06-03 19:56:16,984 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5af40eea and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:56:16, skipping insertion in model container [2024-06-03 19:56:16,984 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 07:56:15" (1/2) ... [2024-06-03 19:56:16,985 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@63dd82f4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:56:16, skipping insertion in model container [2024-06-03 19:56:16,986 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 07:56:16" (2/2) ... [2024-06-03 19:56:16,986 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5af40eea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:56:16, skipping insertion in model container [2024-06-03 19:56:16,986 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 07:56:16" (2/2) ... [2024-06-03 19:56:16,986 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-03 19:56:17,096 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-03 19:56:17,097 INFO L97 edCorrectnessWitness]: Location invariant before [L862-L862] (((((((((((((((((((! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= a$mem_tmp && a$mem_tmp <= 1) && (a$mem_tmp == 0 || a$mem_tmp == 1)))) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= a$w_buff0 && a$w_buff0 <= 1) && (a$w_buff0 == 0 || a$w_buff0 == 1)))) && (! multithreaded || ((0 <= a$w_buff1 && a$w_buff1 <= 1) && (a$w_buff1 == 0 || a$w_buff1 == 1)))) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0) [2024-06-03 19:56:17,097 INFO L97 edCorrectnessWitness]: Location invariant before [L865-L865] (((((((((((((((((((! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= a$mem_tmp && a$mem_tmp <= 1) && (a$mem_tmp == 0 || a$mem_tmp == 1)))) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= a$w_buff0 && a$w_buff0 <= 1) && (a$w_buff0 == 0 || a$w_buff0 == 1)))) && (! multithreaded || ((0 <= a$w_buff1 && a$w_buff1 <= 1) && (a$w_buff1 == 0 || a$w_buff1 == 1)))) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0) [2024-06-03 19:56:17,097 INFO L97 edCorrectnessWitness]: Location invariant before [L864-L864] (((((((((((((((((((! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= a$mem_tmp && a$mem_tmp <= 1) && (a$mem_tmp == 0 || a$mem_tmp == 1)))) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= a$w_buff0 && a$w_buff0 <= 1) && (a$w_buff0 == 0 || a$w_buff0 == 1)))) && (! multithreaded || ((0 <= a$w_buff1 && a$w_buff1 <= 1) && (a$w_buff1 == 0 || a$w_buff1 == 1)))) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0) [2024-06-03 19:56:17,098 INFO L97 edCorrectnessWitness]: Location invariant before [L860-L860] (((((((((((((((((((! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= a$mem_tmp && a$mem_tmp <= 1) && (a$mem_tmp == 0 || a$mem_tmp == 1)))) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= a$w_buff0 && a$w_buff0 <= 1) && (a$w_buff0 == 0 || a$w_buff0 == 1)))) && (! multithreaded || ((0 <= a$w_buff1 && a$w_buff1 <= 1) && (a$w_buff1 == 0 || a$w_buff1 == 1)))) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0) [2024-06-03 19:56:17,098 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-03 19:56:17,098 INFO L106 edCorrectnessWitness]: ghost_update [L858-L858] multithreaded = 1; [2024-06-03 19:56:17,144 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-03 19:56:17,470 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 19:56:17,481 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-03 19:56:17,617 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 19:56:17,675 INFO L206 MainTranslator]: Completed translation [2024-06-03 19:56:17,675 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:56:17 WrapperNode [2024-06-03 19:56:17,676 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-03 19:56:17,697 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-03 19:56:17,697 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-03 19:56:17,697 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-03 19:56:17,703 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:56:17" (1/1) ... [2024-06-03 19:56:17,722 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:56:17" (1/1) ... [2024-06-03 19:56:17,753 INFO L138 Inliner]: procedures = 176, calls = 52, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 136 [2024-06-03 19:56:17,754 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-03 19:56:17,755 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-03 19:56:17,755 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-03 19:56:17,755 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-03 19:56:17,765 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:56:17" (1/1) ... [2024-06-03 19:56:17,765 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:56:17" (1/1) ... [2024-06-03 19:56:17,769 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:56:17" (1/1) ... [2024-06-03 19:56:17,794 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]. [2024-06-03 19:56:17,794 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:56:17" (1/1) ... [2024-06-03 19:56:17,794 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:56:17" (1/1) ... [2024-06-03 19:56:17,804 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:56:17" (1/1) ... [2024-06-03 19:56:17,806 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:56:17" (1/1) ... [2024-06-03 19:56:17,808 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:56:17" (1/1) ... [2024-06-03 19:56:17,810 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:56:17" (1/1) ... [2024-06-03 19:56:17,814 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-03 19:56:17,815 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-03 19:56:17,815 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-03 19:56:17,815 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-03 19:56:17,816 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:56:17" (1/1) ... [2024-06-03 19:56:17,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 19:56:17,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-03 19:56:17,855 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) [2024-06-03 19:56:17,882 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 [2024-06-03 19:56:17,903 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-03 19:56:17,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-03 19:56:17,903 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-03 19:56:17,904 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-03 19:56:17,904 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-03 19:56:17,904 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-03 19:56:17,905 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-03 19:56:17,905 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-03 19:56:17,905 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-03 19:56:17,905 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-03 19:56:17,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-03 19:56:17,906 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-03 19:56:17,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-03 19:56:17,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-03 19:56:17,909 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-03 19:56:18,057 INFO L244 CfgBuilder]: Building ICFG [2024-06-03 19:56:18,059 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-03 19:56:18,485 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-03 19:56:18,485 INFO L293 CfgBuilder]: Performing block encoding [2024-06-03 19:56:18,703 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-03 19:56:18,704 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-03 19:56:18,704 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 07:56:18 BoogieIcfgContainer [2024-06-03 19:56:18,704 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-03 19:56:18,707 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-03 19:56:18,707 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-03 19:56:18,710 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-03 19:56:18,710 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 07:56:15" (1/4) ... [2024-06-03 19:56:18,711 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@489023d6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 07:56:18, skipping insertion in model container [2024-06-03 19:56:18,711 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.06 07:56:16" (2/4) ... [2024-06-03 19:56:18,711 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@489023d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.06 07:56:18, skipping insertion in model container [2024-06-03 19:56:18,711 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:56:17" (3/4) ... [2024-06-03 19:56:18,712 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@489023d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.06 07:56:18, skipping insertion in model container [2024-06-03 19:56:18,712 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 07:56:18" (4/4) ... [2024-06-03 19:56:18,714 INFO L112 eAbstractionObserver]: Analyzing ICFG mix057_power.oepc_pso.oepc_rmo.oepc.i [2024-06-03 19:56:18,730 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-03 19:56:18,731 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-03 19:56:18,731 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-03 19:56:18,795 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-03 19:56:18,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 52 transitions, 120 flow [2024-06-03 19:56:18,872 INFO L124 PetriNetUnfolderBase]: 0/48 cut-off events. [2024-06-03 19:56:18,872 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 19:56:18,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 48 events. 0/48 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 81 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-03 19:56:18,874 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 52 transitions, 120 flow [2024-06-03 19:56:18,879 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 42 transitions, 96 flow [2024-06-03 19:56:18,894 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-03 19:56:18,901 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;@523cf257, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-03 19:56:18,902 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-03 19:56:18,907 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-03 19:56:18,908 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-03 19:56:18,908 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 19:56:18,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:56:18,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-03 19:56:18,909 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:56:18,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:56:18,914 INFO L85 PathProgramCache]: Analyzing trace with hash -741985613, now seen corresponding path program 1 times [2024-06-03 19:56:18,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:56:18,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023038780] [2024-06-03 19:56:18,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:56:18,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:56:19,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:56:20,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:56:20,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:56:20,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023038780] [2024-06-03 19:56:20,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023038780] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:56:20,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:56:20,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-03 19:56:20,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66877805] [2024-06-03 19:56:20,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:56:20,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-03 19:56:20,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:56:20,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-03 19:56:20,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-03 19:56:20,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-03 19:56:20,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 42 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:56:20,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:56:20,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-03 19:56:20,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:56:22,944 INFO L124 PetriNetUnfolderBase]: 14075/18998 cut-off events. [2024-06-03 19:56:22,944 INFO L125 PetriNetUnfolderBase]: For 255/255 co-relation queries the response was YES. [2024-06-03 19:56:23,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38516 conditions, 18998 events. 14075/18998 cut-off events. For 255/255 co-relation queries the response was YES. Maximal size of possible extension queue 634. Compared 97593 event pairs, 11070 based on Foata normal form. 1/18743 useless extension candidates. Maximal degree in co-relation 38500. Up to 18981 conditions per place. [2024-06-03 19:56:23,142 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 47 selfloop transitions, 5 changer transitions 0/56 dead transitions. [2024-06-03 19:56:23,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 56 transitions, 237 flow [2024-06-03 19:56:23,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-03 19:56:23,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-03 19:56:23,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2024-06-03 19:56:23,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5705128205128205 [2024-06-03 19:56:23,158 INFO L175 Difference]: Start difference. First operand has 55 places, 42 transitions, 96 flow. Second operand 3 states and 89 transitions. [2024-06-03 19:56:23,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 56 transitions, 237 flow [2024-06-03 19:56:23,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 56 transitions, 230 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-03 19:56:23,168 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 131 flow [2024-06-03 19:56:23,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2024-06-03 19:56:23,174 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -1 predicate places. [2024-06-03 19:56:23,174 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 131 flow [2024-06-03 19:56:23,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:56:23,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:56:23,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:56:23,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-03 19:56:23,176 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:56:23,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:56:23,177 INFO L85 PathProgramCache]: Analyzing trace with hash -83573550, now seen corresponding path program 1 times [2024-06-03 19:56:23,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:56:23,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079874784] [2024-06-03 19:56:23,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:56:23,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:56:23,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:56:24,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:56:24,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:56:24,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079874784] [2024-06-03 19:56:24,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079874784] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:56:24,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:56:24,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-03 19:56:24,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260364762] [2024-06-03 19:56:24,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:56:24,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-03 19:56:24,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:56:24,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-03 19:56:24,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-03 19:56:24,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-03 19:56:24,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:56:24,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:56:24,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-03 19:56:24,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:56:26,406 INFO L124 PetriNetUnfolderBase]: 14065/18984 cut-off events. [2024-06-03 19:56:26,407 INFO L125 PetriNetUnfolderBase]: For 3370/3370 co-relation queries the response was YES. [2024-06-03 19:56:26,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43119 conditions, 18984 events. 14065/18984 cut-off events. For 3370/3370 co-relation queries the response was YES. Maximal size of possible extension queue 634. Compared 97791 event pairs, 10115 based on Foata normal form. 4/18987 useless extension candidates. Maximal degree in co-relation 43104. Up to 18946 conditions per place. [2024-06-03 19:56:26,510 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 57 selfloop transitions, 9 changer transitions 0/70 dead transitions. [2024-06-03 19:56:26,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 70 transitions, 329 flow [2024-06-03 19:56:26,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-03 19:56:26,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-03 19:56:26,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 114 transitions. [2024-06-03 19:56:26,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5480769230769231 [2024-06-03 19:56:26,513 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 131 flow. Second operand 4 states and 114 transitions. [2024-06-03 19:56:26,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 70 transitions, 329 flow [2024-06-03 19:56:26,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 70 transitions, 324 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-03 19:56:26,515 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 179 flow [2024-06-03 19:56:26,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=179, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2024-06-03 19:56:26,516 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 2 predicate places. [2024-06-03 19:56:26,517 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 179 flow [2024-06-03 19:56:26,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:56:26,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:56:26,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:56:26,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-03 19:56:26,518 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:56:26,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:56:26,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1704188226, now seen corresponding path program 1 times [2024-06-03 19:56:26,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:56:26,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487122631] [2024-06-03 19:56:26,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:56:26,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:56:26,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:56:27,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:56:27,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:56:27,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487122631] [2024-06-03 19:56:27,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487122631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:56:27,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:56:27,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-03 19:56:27,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041354088] [2024-06-03 19:56:27,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:56:27,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-03 19:56:27,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:56:27,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-03 19:56:27,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-03 19:56:27,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-03 19:56:27,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 179 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:56:27,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:56:27,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-03 19:56:27,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:56:29,581 INFO L124 PetriNetUnfolderBase]: 14083/19011 cut-off events. [2024-06-03 19:56:29,582 INFO L125 PetriNetUnfolderBase]: For 9716/9716 co-relation queries the response was YES. [2024-06-03 19:56:29,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47794 conditions, 19011 events. 14083/19011 cut-off events. For 9716/9716 co-relation queries the response was YES. Maximal size of possible extension queue 634. Compared 97778 event pairs, 8523 based on Foata normal form. 7/19016 useless extension candidates. Maximal degree in co-relation 47777. Up to 18867 conditions per place. [2024-06-03 19:56:29,683 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 75 selfloop transitions, 21 changer transitions 0/100 dead transitions. [2024-06-03 19:56:29,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 100 transitions, 545 flow [2024-06-03 19:56:29,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 19:56:29,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 19:56:29,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 149 transitions. [2024-06-03 19:56:29,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.573076923076923 [2024-06-03 19:56:29,685 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 179 flow. Second operand 5 states and 149 transitions. [2024-06-03 19:56:29,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 100 transitions, 545 flow [2024-06-03 19:56:29,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 100 transitions, 526 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-03 19:56:29,690 INFO L231 Difference]: Finished difference. Result has 62 places, 64 transitions, 310 flow [2024-06-03 19:56:29,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=310, PETRI_PLACES=62, PETRI_TRANSITIONS=64} [2024-06-03 19:56:29,691 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 7 predicate places. [2024-06-03 19:56:29,692 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 64 transitions, 310 flow [2024-06-03 19:56:29,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:56:29,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:56:29,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:56:29,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-03 19:56:29,693 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:56:29,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:56:29,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1844341065, now seen corresponding path program 1 times [2024-06-03 19:56:29,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:56:29,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808093775] [2024-06-03 19:56:29,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:56:29,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:56:29,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:56:30,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:56:30,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:56:30,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808093775] [2024-06-03 19:56:30,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808093775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:56:30,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:56:30,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 19:56:30,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312541272] [2024-06-03 19:56:30,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:56:30,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 19:56:30,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:56:30,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 19:56:30,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-03 19:56:30,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-03 19:56:30,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 64 transitions, 310 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) [2024-06-03 19:56:30,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:56:30,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-03 19:56:30,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:56:32,518 INFO L124 PetriNetUnfolderBase]: 14101/19036 cut-off events. [2024-06-03 19:56:32,519 INFO L125 PetriNetUnfolderBase]: For 22863/22868 co-relation queries the response was YES. [2024-06-03 19:56:32,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55056 conditions, 19036 events. 14101/19036 cut-off events. For 22863/22868 co-relation queries the response was YES. Maximal size of possible extension queue 634. Compared 98010 event pairs, 7568 based on Foata normal form. 11/19045 useless extension candidates. Maximal degree in co-relation 55036. Up to 18853 conditions per place. [2024-06-03 19:56:32,651 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 85 selfloop transitions, 26 changer transitions 0/115 dead transitions. [2024-06-03 19:56:32,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 115 transitions, 714 flow [2024-06-03 19:56:32,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 19:56:32,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 19:56:32,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 175 transitions. [2024-06-03 19:56:32,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5608974358974359 [2024-06-03 19:56:32,656 INFO L175 Difference]: Start difference. First operand has 62 places, 64 transitions, 310 flow. Second operand 6 states and 175 transitions. [2024-06-03 19:56:32,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 115 transitions, 714 flow [2024-06-03 19:56:32,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 115 transitions, 702 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-03 19:56:32,672 INFO L231 Difference]: Finished difference. Result has 68 places, 69 transitions, 404 flow [2024-06-03 19:56:32,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=404, PETRI_PLACES=68, PETRI_TRANSITIONS=69} [2024-06-03 19:56:32,674 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 13 predicate places. [2024-06-03 19:56:32,674 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 69 transitions, 404 flow [2024-06-03 19:56:32,674 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) [2024-06-03 19:56:32,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:56:32,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:56:32,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-03 19:56:32,675 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:56:32,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:56:32,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1339999209, now seen corresponding path program 1 times [2024-06-03 19:56:32,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:56:32,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171285832] [2024-06-03 19:56:32,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:56:32,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:56:32,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:56:33,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:56:33,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:56:33,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171285832] [2024-06-03 19:56:33,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171285832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:56:33,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:56:33,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 19:56:33,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252537532] [2024-06-03 19:56:33,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:56:33,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:56:33,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:56:33,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:56:33,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:56:33,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-03 19:56:33,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 69 transitions, 404 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:56:33,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:56:33,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-03 19:56:33,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:56:36,268 INFO L124 PetriNetUnfolderBase]: 14130/19079 cut-off events. [2024-06-03 19:56:36,269 INFO L125 PetriNetUnfolderBase]: For 36260/36265 co-relation queries the response was YES. [2024-06-03 19:56:36,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60721 conditions, 19079 events. 14130/19079 cut-off events. For 36260/36265 co-relation queries the response was YES. Maximal size of possible extension queue 634. Compared 98328 event pairs, 6467 based on Foata normal form. 18/19095 useless extension candidates. Maximal degree in co-relation 60698. Up to 18818 conditions per place. [2024-06-03 19:56:36,418 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 92 selfloop transitions, 30 changer transitions 0/126 dead transitions. [2024-06-03 19:56:36,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 126 transitions, 858 flow [2024-06-03 19:56:36,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:56:36,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:56:36,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 197 transitions. [2024-06-03 19:56:36,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5412087912087912 [2024-06-03 19:56:36,421 INFO L175 Difference]: Start difference. First operand has 68 places, 69 transitions, 404 flow. Second operand 7 states and 197 transitions. [2024-06-03 19:56:36,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 126 transitions, 858 flow [2024-06-03 19:56:36,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 126 transitions, 792 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-03 19:56:36,438 INFO L231 Difference]: Finished difference. Result has 70 places, 72 transitions, 443 flow [2024-06-03 19:56:36,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=443, PETRI_PLACES=70, PETRI_TRANSITIONS=72} [2024-06-03 19:56:36,439 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 15 predicate places. [2024-06-03 19:56:36,440 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 72 transitions, 443 flow [2024-06-03 19:56:36,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:56:36,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:56:36,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:56:36,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-03 19:56:36,441 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:56:36,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:56:36,441 INFO L85 PathProgramCache]: Analyzing trace with hash 906598089, now seen corresponding path program 1 times [2024-06-03 19:56:36,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:56:36,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135027080] [2024-06-03 19:56:36,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:56:36,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:56:36,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:56:37,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:56:37,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:56:37,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135027080] [2024-06-03 19:56:37,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135027080] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:56:37,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:56:37,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 19:56:37,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281647212] [2024-06-03 19:56:37,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:56:37,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 19:56:37,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:56:37,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 19:56:37,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-03 19:56:37,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-03 19:56:37,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 72 transitions, 443 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:56:37,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:56:37,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-03 19:56:37,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:56:39,170 INFO L124 PetriNetUnfolderBase]: 14121/19065 cut-off events. [2024-06-03 19:56:39,171 INFO L125 PetriNetUnfolderBase]: For 51278/51278 co-relation queries the response was YES. [2024-06-03 19:56:39,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65138 conditions, 19065 events. 14121/19065 cut-off events. For 51278/51278 co-relation queries the response was YES. Maximal size of possible extension queue 634. Compared 98278 event pairs, 7483 based on Foata normal form. 3/19067 useless extension candidates. Maximal degree in co-relation 65114. Up to 19033 conditions per place. [2024-06-03 19:56:39,295 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 75 selfloop transitions, 10 changer transitions 0/89 dead transitions. [2024-06-03 19:56:39,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 89 transitions, 657 flow [2024-06-03 19:56:39,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 19:56:39,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 19:56:39,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2024-06-03 19:56:39,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4423076923076923 [2024-06-03 19:56:39,301 INFO L175 Difference]: Start difference. First operand has 70 places, 72 transitions, 443 flow. Second operand 5 states and 115 transitions. [2024-06-03 19:56:39,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 89 transitions, 657 flow [2024-06-03 19:56:39,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 89 transitions, 570 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-03 19:56:39,316 INFO L231 Difference]: Finished difference. Result has 70 places, 72 transitions, 387 flow [2024-06-03 19:56:39,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=387, PETRI_PLACES=70, PETRI_TRANSITIONS=72} [2024-06-03 19:56:39,320 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 15 predicate places. [2024-06-03 19:56:39,320 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 72 transitions, 387 flow [2024-06-03 19:56:39,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:56:39,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:56:39,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:56:39,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-03 19:56:39,321 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:56:39,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:56:39,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1985166347, now seen corresponding path program 1 times [2024-06-03 19:56:39,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:56:39,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130288677] [2024-06-03 19:56:39,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:56:39,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:56:39,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:56:40,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:56:40,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:56:40,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130288677] [2024-06-03 19:56:40,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130288677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:56:40,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:56:40,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 19:56:40,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011321755] [2024-06-03 19:56:40,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:56:40,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:56:40,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:56:40,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:56:40,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:56:40,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-03 19:56:40,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 72 transitions, 387 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:56:40,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:56:40,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-03 19:56:40,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:56:42,213 INFO L124 PetriNetUnfolderBase]: 14145/19098 cut-off events. [2024-06-03 19:56:42,214 INFO L125 PetriNetUnfolderBase]: For 58241/58241 co-relation queries the response was YES. [2024-06-03 19:56:42,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66248 conditions, 19098 events. 14145/19098 cut-off events. For 58241/58241 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 97872 event pairs, 7102 based on Foata normal form. 10/19106 useless extension candidates. Maximal degree in co-relation 66222. Up to 18955 conditions per place. [2024-06-03 19:56:42,294 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 90 selfloop transitions, 22 changer transitions 0/116 dead transitions. [2024-06-03 19:56:42,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 116 transitions, 829 flow [2024-06-03 19:56:42,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 19:56:42,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 19:56:42,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-06-03 19:56:42,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46794871794871795 [2024-06-03 19:56:42,296 INFO L175 Difference]: Start difference. First operand has 70 places, 72 transitions, 387 flow. Second operand 6 states and 146 transitions. [2024-06-03 19:56:42,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 116 transitions, 829 flow [2024-06-03 19:56:42,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 116 transitions, 800 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-03 19:56:42,308 INFO L231 Difference]: Finished difference. Result has 74 places, 86 transitions, 544 flow [2024-06-03 19:56:42,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=544, PETRI_PLACES=74, PETRI_TRANSITIONS=86} [2024-06-03 19:56:42,309 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 19 predicate places. [2024-06-03 19:56:42,309 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 86 transitions, 544 flow [2024-06-03 19:56:42,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:56:42,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:56:42,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:56:42,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-03 19:56:42,310 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:56:42,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:56:42,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1977609586, now seen corresponding path program 1 times [2024-06-03 19:56:42,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:56:42,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229131103] [2024-06-03 19:56:42,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:56:42,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:56:42,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:56:43,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:56:43,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:56:43,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229131103] [2024-06-03 19:56:43,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229131103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:56:43,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:56:43,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 19:56:43,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371232732] [2024-06-03 19:56:43,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:56:43,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:56:43,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:56:43,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:56:43,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:56:43,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-03 19:56:43,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 86 transitions, 544 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:56:43,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:56:43,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-03 19:56:43,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:56:45,048 INFO L124 PetriNetUnfolderBase]: 14158/19117 cut-off events. [2024-06-03 19:56:45,048 INFO L125 PetriNetUnfolderBase]: For 82276/82286 co-relation queries the response was YES. [2024-06-03 19:56:45,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73336 conditions, 19117 events. 14158/19117 cut-off events. For 82276/82286 co-relation queries the response was YES. Maximal size of possible extension queue 634. Compared 97901 event pairs, 7260 based on Foata normal form. 14/19129 useless extension candidates. Maximal degree in co-relation 73308. Up to 18967 conditions per place. [2024-06-03 19:56:45,165 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 91 selfloop transitions, 25 changer transitions 0/120 dead transitions. [2024-06-03 19:56:45,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 120 transitions, 925 flow [2024-06-03 19:56:45,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 19:56:45,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 19:56:45,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-06-03 19:56:45,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46794871794871795 [2024-06-03 19:56:45,167 INFO L175 Difference]: Start difference. First operand has 74 places, 86 transitions, 544 flow. Second operand 6 states and 146 transitions. [2024-06-03 19:56:45,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 120 transitions, 925 flow [2024-06-03 19:56:45,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 120 transitions, 897 flow, removed 13 selfloop flow, removed 1 redundant places. [2024-06-03 19:56:45,215 INFO L231 Difference]: Finished difference. Result has 79 places, 90 transitions, 612 flow [2024-06-03 19:56:45,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=612, PETRI_PLACES=79, PETRI_TRANSITIONS=90} [2024-06-03 19:56:45,216 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 24 predicate places. [2024-06-03 19:56:45,217 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 90 transitions, 612 flow [2024-06-03 19:56:45,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:56:45,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:56:45,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:56:45,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-03 19:56:45,220 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:56:45,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:56:45,221 INFO L85 PathProgramCache]: Analyzing trace with hash -637544152, now seen corresponding path program 2 times [2024-06-03 19:56:45,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:56:45,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051229827] [2024-06-03 19:56:45,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:56:45,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:56:45,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:56:46,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:56:46,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:56:46,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051229827] [2024-06-03 19:56:46,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051229827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:56:46,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:56:46,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 19:56:46,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852953455] [2024-06-03 19:56:46,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:56:46,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:56:46,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:56:46,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:56:46,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:56:46,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-03 19:56:46,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 90 transitions, 612 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:56:46,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:56:46,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-03 19:56:46,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:56:47,940 INFO L124 PetriNetUnfolderBase]: 14128/19183 cut-off events. [2024-06-03 19:56:47,940 INFO L125 PetriNetUnfolderBase]: For 98844/98844 co-relation queries the response was YES. [2024-06-03 19:56:47,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74098 conditions, 19183 events. 14128/19183 cut-off events. For 98844/98844 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 100515 event pairs, 8992 based on Foata normal form. 3/19185 useless extension candidates. Maximal degree in co-relation 74067. Up to 19023 conditions per place. [2024-06-03 19:56:48,071 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 95 selfloop transitions, 16 changer transitions 0/115 dead transitions. [2024-06-03 19:56:48,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 115 transitions, 910 flow [2024-06-03 19:56:48,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:56:48,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:56:48,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 147 transitions. [2024-06-03 19:56:48,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40384615384615385 [2024-06-03 19:56:48,073 INFO L175 Difference]: Start difference. First operand has 79 places, 90 transitions, 612 flow. Second operand 7 states and 147 transitions. [2024-06-03 19:56:48,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 115 transitions, 910 flow [2024-06-03 19:56:48,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 115 transitions, 866 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-03 19:56:48,161 INFO L231 Difference]: Finished difference. Result has 84 places, 92 transitions, 632 flow [2024-06-03 19:56:48,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=632, PETRI_PLACES=84, PETRI_TRANSITIONS=92} [2024-06-03 19:56:48,162 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 29 predicate places. [2024-06-03 19:56:48,162 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 92 transitions, 632 flow [2024-06-03 19:56:48,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:56:48,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:56:48,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:56:48,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-03 19:56:48,163 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:56:48,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:56:48,163 INFO L85 PathProgramCache]: Analyzing trace with hash -2121037646, now seen corresponding path program 1 times [2024-06-03 19:56:48,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:56:48,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945720433] [2024-06-03 19:56:48,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:56:48,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:56:48,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:56:49,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:56:49,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:56:49,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945720433] [2024-06-03 19:56:49,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945720433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:56:49,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:56:49,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:56:49,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674173643] [2024-06-03 19:56:49,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:56:49,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:56:49,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:56:49,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:56:49,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:56:49,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-03 19:56:49,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 92 transitions, 632 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) [2024-06-03 19:56:49,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:56:49,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-03 19:56:49,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:56:51,364 INFO L124 PetriNetUnfolderBase]: 14900/20134 cut-off events. [2024-06-03 19:56:51,364 INFO L125 PetriNetUnfolderBase]: For 110408/110427 co-relation queries the response was YES. [2024-06-03 19:56:51,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79944 conditions, 20134 events. 14900/20134 cut-off events. For 110408/110427 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 103765 event pairs, 6376 based on Foata normal form. 38/20166 useless extension candidates. Maximal degree in co-relation 79911. Up to 19059 conditions per place. [2024-06-03 19:56:51,475 INFO L140 encePairwiseOnDemand]: 34/52 looper letters, 142 selfloop transitions, 59 changer transitions 0/205 dead transitions. [2024-06-03 19:56:51,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 205 transitions, 1812 flow [2024-06-03 19:56:51,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:56:51,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:56:51,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 211 transitions. [2024-06-03 19:56:51,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5072115384615384 [2024-06-03 19:56:51,477 INFO L175 Difference]: Start difference. First operand has 84 places, 92 transitions, 632 flow. Second operand 8 states and 211 transitions. [2024-06-03 19:56:51,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 205 transitions, 1812 flow [2024-06-03 19:56:51,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 205 transitions, 1705 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-03 19:56:51,541 INFO L231 Difference]: Finished difference. Result has 90 places, 135 transitions, 1096 flow [2024-06-03 19:56:51,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1096, PETRI_PLACES=90, PETRI_TRANSITIONS=135} [2024-06-03 19:56:51,542 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 35 predicate places. [2024-06-03 19:56:51,542 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 135 transitions, 1096 flow [2024-06-03 19:56:51,542 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) [2024-06-03 19:56:51,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:56:51,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:56:51,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-03 19:56:51,543 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:56:51,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:56:51,543 INFO L85 PathProgramCache]: Analyzing trace with hash -956695306, now seen corresponding path program 2 times [2024-06-03 19:56:51,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:56:51,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702278832] [2024-06-03 19:56:51,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:56:51,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:56:51,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:56:52,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:56:52,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:56:52,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702278832] [2024-06-03 19:56:52,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702278832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:56:52,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:56:52,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:56:52,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687717352] [2024-06-03 19:56:52,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:56:52,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:56:52,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:56:52,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:56:52,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:56:52,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-03 19:56:52,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 135 transitions, 1096 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) [2024-06-03 19:56:52,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:56:52,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-03 19:56:52,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:56:54,854 INFO L124 PetriNetUnfolderBase]: 15612/21081 cut-off events. [2024-06-03 19:56:54,854 INFO L125 PetriNetUnfolderBase]: For 157075/157105 co-relation queries the response was YES. [2024-06-03 19:56:54,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97149 conditions, 21081 events. 15612/21081 cut-off events. For 157075/157105 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 108791 event pairs, 6475 based on Foata normal form. 64/21139 useless extension candidates. Maximal degree in co-relation 97111. Up to 19501 conditions per place. [2024-06-03 19:56:54,977 INFO L140 encePairwiseOnDemand]: 37/52 looper letters, 124 selfloop transitions, 90 changer transitions 0/218 dead transitions. [2024-06-03 19:56:54,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 218 transitions, 2178 flow [2024-06-03 19:56:54,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:56:54,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:56:54,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-06-03 19:56:54,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-03 19:56:54,980 INFO L175 Difference]: Start difference. First operand has 90 places, 135 transitions, 1096 flow. Second operand 7 states and 182 transitions. [2024-06-03 19:56:54,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 218 transitions, 2178 flow [2024-06-03 19:56:55,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 218 transitions, 2100 flow, removed 38 selfloop flow, removed 1 redundant places. [2024-06-03 19:56:55,083 INFO L231 Difference]: Finished difference. Result has 98 places, 166 transitions, 1623 flow [2024-06-03 19:56:55,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1038, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1623, PETRI_PLACES=98, PETRI_TRANSITIONS=166} [2024-06-03 19:56:55,084 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 43 predicate places. [2024-06-03 19:56:55,084 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 166 transitions, 1623 flow [2024-06-03 19:56:55,084 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) [2024-06-03 19:56:55,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:56:55,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:56:55,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-03 19:56:55,085 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:56:55,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:56:55,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1954081528, now seen corresponding path program 3 times [2024-06-03 19:56:55,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:56:55,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344121669] [2024-06-03 19:56:55,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:56:55,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:56:55,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:56:55,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:56:55,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:56:55,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344121669] [2024-06-03 19:56:55,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344121669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:56:55,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:56:55,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:56:55,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9117204] [2024-06-03 19:56:55,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:56:55,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:56:55,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:56:55,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:56:55,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:56:55,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-03 19:56:55,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 166 transitions, 1623 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) [2024-06-03 19:56:56,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:56:56,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-03 19:56:56,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:56:58,374 INFO L124 PetriNetUnfolderBase]: 15754/21325 cut-off events. [2024-06-03 19:56:58,375 INFO L125 PetriNetUnfolderBase]: For 217104/217107 co-relation queries the response was YES. [2024-06-03 19:56:58,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108955 conditions, 21325 events. 15754/21325 cut-off events. For 217104/217107 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 111484 event pairs, 8643 based on Foata normal form. 18/21341 useless extension candidates. Maximal degree in co-relation 108912. Up to 21059 conditions per place. [2024-06-03 19:56:58,564 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 179 selfloop transitions, 33 changer transitions 0/216 dead transitions. [2024-06-03 19:56:58,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 216 transitions, 2402 flow [2024-06-03 19:56:58,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:56:58,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:56:58,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-03 19:56:58,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45879120879120877 [2024-06-03 19:56:58,566 INFO L175 Difference]: Start difference. First operand has 98 places, 166 transitions, 1623 flow. Second operand 7 states and 167 transitions. [2024-06-03 19:56:58,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 216 transitions, 2402 flow [2024-06-03 19:56:58,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 216 transitions, 2293 flow, removed 45 selfloop flow, removed 2 redundant places. [2024-06-03 19:56:58,805 INFO L231 Difference]: Finished difference. Result has 104 places, 178 transitions, 1768 flow [2024-06-03 19:56:58,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1521, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1768, PETRI_PLACES=104, PETRI_TRANSITIONS=178} [2024-06-03 19:56:58,806 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 49 predicate places. [2024-06-03 19:56:58,806 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 178 transitions, 1768 flow [2024-06-03 19:56:58,807 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) [2024-06-03 19:56:58,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:56:58,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:56:58,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-03 19:56:58,807 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:56:58,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:56:58,808 INFO L85 PathProgramCache]: Analyzing trace with hash 935212044, now seen corresponding path program 4 times [2024-06-03 19:56:58,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:56:58,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426141376] [2024-06-03 19:56:58,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:56:58,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:56:58,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:56:59,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:56:59,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:56:59,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426141376] [2024-06-03 19:56:59,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426141376] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:56:59,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:56:59,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:56:59,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023383946] [2024-06-03 19:56:59,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:56:59,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:56:59,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:56:59,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:56:59,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:56:59,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-03 19:56:59,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 178 transitions, 1768 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) [2024-06-03 19:56:59,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:56:59,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-03 19:56:59,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:02,735 INFO L124 PetriNetUnfolderBase]: 15806/21394 cut-off events. [2024-06-03 19:57:02,735 INFO L125 PetriNetUnfolderBase]: For 234902/234907 co-relation queries the response was YES. [2024-06-03 19:57:02,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109493 conditions, 21394 events. 15806/21394 cut-off events. For 234902/234907 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 111877 event pairs, 8642 based on Foata normal form. 22/21414 useless extension candidates. Maximal degree in co-relation 109447. Up to 20899 conditions per place. [2024-06-03 19:57:02,877 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 185 selfloop transitions, 53 changer transitions 0/242 dead transitions. [2024-06-03 19:57:02,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 242 transitions, 2820 flow [2024-06-03 19:57:02,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:57:02,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:57:02,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-03 19:57:02,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4697802197802198 [2024-06-03 19:57:02,878 INFO L175 Difference]: Start difference. First operand has 104 places, 178 transitions, 1768 flow. Second operand 7 states and 171 transitions. [2024-06-03 19:57:02,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 242 transitions, 2820 flow [2024-06-03 19:57:03,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 242 transitions, 2698 flow, removed 34 selfloop flow, removed 4 redundant places. [2024-06-03 19:57:03,036 INFO L231 Difference]: Finished difference. Result has 108 places, 198 transitions, 2099 flow [2024-06-03 19:57:03,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1652, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2099, PETRI_PLACES=108, PETRI_TRANSITIONS=198} [2024-06-03 19:57:03,037 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 53 predicate places. [2024-06-03 19:57:03,037 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 198 transitions, 2099 flow [2024-06-03 19:57:03,037 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) [2024-06-03 19:57:03,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:03,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:03,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-03 19:57:03,037 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:57:03,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:03,038 INFO L85 PathProgramCache]: Analyzing trace with hash -779317708, now seen corresponding path program 1 times [2024-06-03 19:57:03,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:03,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502157328] [2024-06-03 19:57:03,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:03,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:03,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:04,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:04,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:04,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502157328] [2024-06-03 19:57:04,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502157328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:04,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:04,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:57:04,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726963801] [2024-06-03 19:57:04,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:04,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:57:04,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:04,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:57:04,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:57:04,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-03 19:57:04,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 198 transitions, 2099 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) [2024-06-03 19:57:04,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:04,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-03 19:57:04,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:07,750 INFO L124 PetriNetUnfolderBase]: 15826/21421 cut-off events. [2024-06-03 19:57:07,750 INFO L125 PetriNetUnfolderBase]: For 259182/259185 co-relation queries the response was YES. [2024-06-03 19:57:07,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112061 conditions, 21421 events. 15826/21421 cut-off events. For 259182/259185 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 111787 event pairs, 8492 based on Foata normal form. 12/21431 useless extension candidates. Maximal degree in co-relation 112014. Up to 21136 conditions per place. [2024-06-03 19:57:07,877 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 199 selfloop transitions, 34 changer transitions 0/237 dead transitions. [2024-06-03 19:57:07,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 237 transitions, 2823 flow [2024-06-03 19:57:07,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:57:07,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:57:07,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-03 19:57:07,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-06-03 19:57:07,882 INFO L175 Difference]: Start difference. First operand has 108 places, 198 transitions, 2099 flow. Second operand 7 states and 168 transitions. [2024-06-03 19:57:07,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 237 transitions, 2823 flow [2024-06-03 19:57:08,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 237 transitions, 2718 flow, removed 41 selfloop flow, removed 3 redundant places. [2024-06-03 19:57:08,214 INFO L231 Difference]: Finished difference. Result has 112 places, 202 transitions, 2131 flow [2024-06-03 19:57:08,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1994, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2131, PETRI_PLACES=112, PETRI_TRANSITIONS=202} [2024-06-03 19:57:08,215 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 57 predicate places. [2024-06-03 19:57:08,215 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 202 transitions, 2131 flow [2024-06-03 19:57:08,216 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) [2024-06-03 19:57:08,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:08,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:08,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-03 19:57:08,216 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:57:08,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:08,216 INFO L85 PathProgramCache]: Analyzing trace with hash -2102601317, now seen corresponding path program 1 times [2024-06-03 19:57:08,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:08,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823123138] [2024-06-03 19:57:08,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:08,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:08,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:08,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:08,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:08,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823123138] [2024-06-03 19:57:08,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823123138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:08,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:08,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 19:57:08,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458616595] [2024-06-03 19:57:08,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:08,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 19:57:08,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:08,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 19:57:08,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-03 19:57:09,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-03 19:57:09,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 202 transitions, 2131 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:09,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:09,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-03 19:57:09,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:12,028 INFO L124 PetriNetUnfolderBase]: 15819/21411 cut-off events. [2024-06-03 19:57:12,029 INFO L125 PetriNetUnfolderBase]: For 282558/282558 co-relation queries the response was YES. [2024-06-03 19:57:12,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115815 conditions, 21411 events. 15819/21411 cut-off events. For 282558/282558 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 111809 event pairs, 8652 based on Foata normal form. 2/21412 useless extension candidates. Maximal degree in co-relation 115766. Up to 21295 conditions per place. [2024-06-03 19:57:12,164 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 200 selfloop transitions, 11 changer transitions 0/215 dead transitions. [2024-06-03 19:57:12,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 215 transitions, 2593 flow [2024-06-03 19:57:12,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 19:57:12,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 19:57:12,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 111 transitions. [2024-06-03 19:57:12,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4269230769230769 [2024-06-03 19:57:12,166 INFO L175 Difference]: Start difference. First operand has 112 places, 202 transitions, 2131 flow. Second operand 5 states and 111 transitions. [2024-06-03 19:57:12,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 215 transitions, 2593 flow [2024-06-03 19:57:12,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 215 transitions, 2474 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-03 19:57:12,323 INFO L231 Difference]: Finished difference. Result has 112 places, 202 transitions, 2043 flow [2024-06-03 19:57:12,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2012, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2043, PETRI_PLACES=112, PETRI_TRANSITIONS=202} [2024-06-03 19:57:12,324 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 57 predicate places. [2024-06-03 19:57:12,324 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 202 transitions, 2043 flow [2024-06-03 19:57:12,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:12,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:12,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:12,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-03 19:57:12,325 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:57:12,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:12,325 INFO L85 PathProgramCache]: Analyzing trace with hash 842264265, now seen corresponding path program 1 times [2024-06-03 19:57:12,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:12,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961221392] [2024-06-03 19:57:12,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:12,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:12,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:13,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:13,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:13,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961221392] [2024-06-03 19:57:13,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961221392] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:13,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:13,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:57:13,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866042195] [2024-06-03 19:57:13,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:13,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:57:13,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:13,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:57:13,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:57:13,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-03 19:57:13,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 202 transitions, 2043 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:13,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:13,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-03 19:57:13,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:16,651 INFO L124 PetriNetUnfolderBase]: 15911/21483 cut-off events. [2024-06-03 19:57:16,652 INFO L125 PetriNetUnfolderBase]: For 295944/295986 co-relation queries the response was YES. [2024-06-03 19:57:16,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117487 conditions, 21483 events. 15911/21483 cut-off events. For 295944/295986 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 110681 event pairs, 6638 based on Foata normal form. 41/21522 useless extension candidates. Maximal degree in co-relation 117437. Up to 21139 conditions per place. [2024-06-03 19:57:16,783 INFO L140 encePairwiseOnDemand]: 36/52 looper letters, 213 selfloop transitions, 59 changer transitions 0/276 dead transitions. [2024-06-03 19:57:16,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 276 transitions, 3035 flow [2024-06-03 19:57:16,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:57:16,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:57:16,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2024-06-03 19:57:16,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4551282051282051 [2024-06-03 19:57:16,785 INFO L175 Difference]: Start difference. First operand has 112 places, 202 transitions, 2043 flow. Second operand 9 states and 213 transitions. [2024-06-03 19:57:16,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 276 transitions, 3035 flow [2024-06-03 19:57:16,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 276 transitions, 2999 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-03 19:57:16,914 INFO L231 Difference]: Finished difference. Result has 119 places, 225 transitions, 2399 flow [2024-06-03 19:57:16,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2007, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2399, PETRI_PLACES=119, PETRI_TRANSITIONS=225} [2024-06-03 19:57:16,915 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 64 predicate places. [2024-06-03 19:57:16,915 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 225 transitions, 2399 flow [2024-06-03 19:57:16,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:16,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:16,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:16,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-03 19:57:16,916 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:57:16,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:16,916 INFO L85 PathProgramCache]: Analyzing trace with hash -628486669, now seen corresponding path program 2 times [2024-06-03 19:57:16,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:16,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901718023] [2024-06-03 19:57:16,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:16,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:16,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:17,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:17,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:17,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901718023] [2024-06-03 19:57:17,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901718023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:17,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:17,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:57:17,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516311615] [2024-06-03 19:57:17,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:17,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:57:17,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:17,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:57:17,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:57:18,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-03 19:57:18,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 225 transitions, 2399 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:18,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:18,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-03 19:57:18,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:21,446 INFO L124 PetriNetUnfolderBase]: 15999/21604 cut-off events. [2024-06-03 19:57:21,446 INFO L125 PetriNetUnfolderBase]: For 337604/337648 co-relation queries the response was YES. [2024-06-03 19:57:21,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123291 conditions, 21604 events. 15999/21604 cut-off events. For 337604/337648 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 111386 event pairs, 6631 based on Foata normal form. 45/21647 useless extension candidates. Maximal degree in co-relation 123239. Up to 21161 conditions per place. [2024-06-03 19:57:21,609 INFO L140 encePairwiseOnDemand]: 36/52 looper letters, 219 selfloop transitions, 83 changer transitions 0/306 dead transitions. [2024-06-03 19:57:21,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 306 transitions, 3615 flow [2024-06-03 19:57:21,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:57:21,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:57:21,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 241 transitions. [2024-06-03 19:57:21,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634615384615385 [2024-06-03 19:57:21,612 INFO L175 Difference]: Start difference. First operand has 119 places, 225 transitions, 2399 flow. Second operand 10 states and 241 transitions. [2024-06-03 19:57:21,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 306 transitions, 3615 flow [2024-06-03 19:57:21,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 306 transitions, 3536 flow, removed 34 selfloop flow, removed 2 redundant places. [2024-06-03 19:57:21,863 INFO L231 Difference]: Finished difference. Result has 129 places, 245 transitions, 2805 flow [2024-06-03 19:57:21,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2320, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2805, PETRI_PLACES=129, PETRI_TRANSITIONS=245} [2024-06-03 19:57:21,863 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 74 predicate places. [2024-06-03 19:57:21,863 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 245 transitions, 2805 flow [2024-06-03 19:57:21,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:21,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:21,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:21,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-03 19:57:21,864 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:57:21,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:21,864 INFO L85 PathProgramCache]: Analyzing trace with hash 998300992, now seen corresponding path program 1 times [2024-06-03 19:57:21,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:21,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273131639] [2024-06-03 19:57:21,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:21,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:21,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat