./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 [2024-06-04 15:23:21,961 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-04 15:23:22,021 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-04 15:23:22,024 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-04 15:23:22,024 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-04 15:23:22,045 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-04 15:23:22,045 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-04 15:23:22,046 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-04 15:23:22,046 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-04 15:23:22,046 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-04 15:23:22,046 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-04 15:23:22,047 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-04 15:23:22,047 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-04 15:23:22,052 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-04 15:23:22,054 INFO L153 SettingsManager]: * Use SBE=true [2024-06-04 15:23:22,054 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-04 15:23:22,055 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-04 15:23:22,055 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-04 15:23:22,055 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-04 15:23:22,055 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-04 15:23:22,056 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-04 15:23:22,056 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-04 15:23:22,056 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-04 15:23:22,056 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-04 15:23:22,057 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-04 15:23:22,057 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-04 15:23:22,057 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-04 15:23:22,057 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-04 15:23:22,058 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-04 15:23:22,058 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-04 15:23:22,058 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-04 15:23:22,058 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-04 15:23:22,059 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 15:23:22,059 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-04 15:23:22,059 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-04 15:23:22,059 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-04 15:23:22,060 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-04 15:23:22,060 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-04 15:23:22,060 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-04 15:23:22,060 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-04 15:23:22,061 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-04 15:23:22,061 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-04 15:23:22,061 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-04 15:23:22,061 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-04 15:23:22,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-04 15:23:22,290 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-04 15:23:22,292 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-04 15:23:22,293 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-04 15:23:22,294 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-04 15:23:22,295 INFO L431 ainManager$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 [2024-06-04 15:23:22,447 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-04 15:23:22,447 INFO L274 PluginConnector]: CDTParser initialized [2024-06-04 15:23:22,447 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix057_power.oepc_pso.oepc_rmo.oepc.i [2024-06-04 15:23:23,404 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-04 15:23:23,597 INFO L384 CDTParser]: Found 1 translation units. [2024-06-04 15:23:23,598 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix057_power.oepc_pso.oepc_rmo.oepc.i [2024-06-04 15:23:23,609 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca71d05bc/e82eca34c6b946b5a7530f2717937d4d/FLAGb0fa7ac6e [2024-06-04 15:23:23,621 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca71d05bc/e82eca34c6b946b5a7530f2717937d4d [2024-06-04 15:23:23,624 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-04 15:23:23,625 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-04 15:23:23,627 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-04 15:23:23,627 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-04 15:23:23,630 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-04 15:23:23,631 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 03:23:22" (1/2) ... [2024-06-04 15:23:23,632 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40f23d1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:23:23, skipping insertion in model container [2024-06-04 15:23:23,632 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 03:23:22" (1/2) ... [2024-06-04 15:23:23,633 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1eb62256 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:23:23, skipping insertion in model container [2024-06-04 15:23:23,633 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 03:23:23" (2/2) ... [2024-06-04 15:23:23,634 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40f23d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:23:23, skipping insertion in model container [2024-06-04 15:23:23,634 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 03:23:23" (2/2) ... [2024-06-04 15:23:23,634 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-04 15:23:23,722 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-04 15:23:23,723 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$r_buff1_thd2 == (_Bool)0) [2024-06-04 15:23:23,723 INFO L97 edCorrectnessWitness]: Location invariant before [L865-L865] (((((((((((((((((((! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2))) && (! multithreaded || a$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) [2024-06-04 15:23:23,724 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$r_buff1_thd2 == (_Bool)0) [2024-06-04 15:23:23,724 INFO L97 edCorrectnessWitness]: Location invariant before [L864-L864] (((((((((((((((((((! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2))) && (! multithreaded || a$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) [2024-06-04 15:23:23,724 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-04 15:23:23,725 INFO L106 edCorrectnessWitness]: ghost_update [L858-L858] multithreaded = 1; [2024-06-04 15:23:23,767 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-04 15:23:24,112 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 15:23:24,124 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-04 15:23:24,232 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 15:23:24,264 INFO L206 MainTranslator]: Completed translation [2024-06-04 15:23:24,265 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:23:24 WrapperNode [2024-06-04 15:23:24,265 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-04 15:23:24,266 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-04 15:23:24,267 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-04 15:23:24,267 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-04 15:23:24,272 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:23:24" (1/1) ... [2024-06-04 15:23:24,291 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:23:24" (1/1) ... [2024-06-04 15:23:24,317 INFO L138 Inliner]: procedures = 176, calls = 52, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 136 [2024-06-04 15:23:24,318 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-04 15:23:24,318 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-04 15:23:24,318 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-04 15:23:24,318 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-04 15:23:24,326 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:23:24" (1/1) ... [2024-06-04 15:23:24,327 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:23:24" (1/1) ... [2024-06-04 15:23:24,331 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:23:24" (1/1) ... [2024-06-04 15:23:24,351 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-04 15:23:24,351 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:23:24" (1/1) ... [2024-06-04 15:23:24,351 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:23:24" (1/1) ... [2024-06-04 15:23:24,359 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:23:24" (1/1) ... [2024-06-04 15:23:24,361 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:23:24" (1/1) ... [2024-06-04 15:23:24,363 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:23:24" (1/1) ... [2024-06-04 15:23:24,364 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:23:24" (1/1) ... [2024-06-04 15:23:24,367 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-04 15:23:24,368 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-04 15:23:24,368 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-04 15:23:24,368 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-04 15:23:24,369 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:23:24" (1/1) ... [2024-06-04 15:23:24,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 15:23:24,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 15:23:24,455 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-04 15:23:24,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-04 15:23:24,486 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-04 15:23:24,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-04 15:23:24,486 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-04 15:23:24,486 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-04 15:23:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-04 15:23:24,487 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-04 15:23:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-04 15:23:24,487 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-04 15:23:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-04 15:23:24,487 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-04 15:23:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-04 15:23:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-04 15:23:24,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-04 15:23:24,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-04 15:23:24,489 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-04 15:23:24,597 INFO L244 CfgBuilder]: Building ICFG [2024-06-04 15:23:24,599 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-04 15:23:24,925 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-04 15:23:24,926 INFO L293 CfgBuilder]: Performing block encoding [2024-06-04 15:23:25,053 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-04 15:23:25,053 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-04 15:23:25,053 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 03:23:25 BoogieIcfgContainer [2024-06-04 15:23:25,054 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-04 15:23:25,056 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-04 15:23:25,056 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-04 15:23:25,058 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-04 15:23:25,059 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 03:23:22" (1/4) ... [2024-06-04 15:23:25,059 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@92da510 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 03:23:25, skipping insertion in model container [2024-06-04 15:23:25,059 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.06 03:23:23" (2/4) ... [2024-06-04 15:23:25,060 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@92da510 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 03:23:25, skipping insertion in model container [2024-06-04 15:23:25,060 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:23:24" (3/4) ... [2024-06-04 15:23:25,060 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@92da510 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 03:23:25, skipping insertion in model container [2024-06-04 15:23:25,061 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 03:23:25" (4/4) ... [2024-06-04 15:23:25,062 INFO L112 eAbstractionObserver]: Analyzing ICFG mix057_power.oepc_pso.oepc_rmo.oepc.i [2024-06-04 15:23:25,076 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-04 15:23:25,076 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-04 15:23:25,076 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-04 15:23:25,140 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-04 15:23:25,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 52 transitions, 120 flow [2024-06-04 15:23:25,185 INFO L124 PetriNetUnfolderBase]: 0/48 cut-off events. [2024-06-04 15:23:25,185 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 15:23:25,187 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. [2024-06-04 15:23:25,187 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 52 transitions, 120 flow [2024-06-04 15:23:25,189 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 42 transitions, 96 flow [2024-06-04 15:23:25,195 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-04 15:23:25,200 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;@3eb70fcd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-04 15:23:25,200 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-04 15:23:25,203 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-04 15:23:25,203 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-04 15:23:25,204 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 15:23:25,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:23:25,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-04 15:23:25,205 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)] === [2024-06-04 15:23:25,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:23:25,208 INFO L85 PathProgramCache]: Analyzing trace with hash -741985613, now seen corresponding path program 1 times [2024-06-04 15:23:25,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:23:25,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480915206] [2024-06-04 15:23:25,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:23:25,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:23:25,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:23:26,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:23:26,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:23:26,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480915206] [2024-06-04 15:23:26,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480915206] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:23:26,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:23:26,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-04 15:23:26,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299662010] [2024-06-04 15:23:26,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:23:26,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-04 15:23:26,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:23:26,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-04 15:23:26,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-04 15:23:26,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-04 15:23:26,248 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) [2024-06-04 15:23:26,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:23:26,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-04 15:23:26,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:23:28,244 INFO L124 PetriNetUnfolderBase]: 14075/18998 cut-off events. [2024-06-04 15:23:28,244 INFO L125 PetriNetUnfolderBase]: For 255/255 co-relation queries the response was YES. [2024-06-04 15:23:28,274 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. [2024-06-04 15:23:28,348 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 47 selfloop transitions, 5 changer transitions 0/56 dead transitions. [2024-06-04 15:23:28,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 56 transitions, 237 flow [2024-06-04 15:23:28,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-04 15:23:28,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-04 15:23:28,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2024-06-04 15:23:28,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5705128205128205 [2024-06-04 15:23:28,358 INFO L175 Difference]: Start difference. First operand has 55 places, 42 transitions, 96 flow. Second operand 3 states and 89 transitions. [2024-06-04 15:23:28,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 56 transitions, 237 flow [2024-06-04 15:23:28,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 56 transitions, 230 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-04 15:23:28,363 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 131 flow [2024-06-04 15:23:28,364 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} [2024-06-04 15:23:28,367 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -1 predicate places. [2024-06-04 15:23:28,367 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 131 flow [2024-06-04 15:23:28,367 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) [2024-06-04 15:23:28,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:23:28,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:23:28,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-04 15:23:28,368 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)] === [2024-06-04 15:23:28,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:23:28,368 INFO L85 PathProgramCache]: Analyzing trace with hash -83573550, now seen corresponding path program 1 times [2024-06-04 15:23:28,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:23:28,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943787944] [2024-06-04 15:23:28,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:23:28,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:23:28,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:23:28,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:23:28,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:23:28,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943787944] [2024-06-04 15:23:28,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943787944] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:23:28,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:23:28,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-04 15:23:28,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673266082] [2024-06-04 15:23:28,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:23:28,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-04 15:23:28,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:23:28,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-04 15:23:28,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-04 15:23:28,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-04 15:23:28,974 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) [2024-06-04 15:23:28,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:23:28,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-04 15:23:28,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:23:30,761 INFO L124 PetriNetUnfolderBase]: 14065/18984 cut-off events. [2024-06-04 15:23:30,761 INFO L125 PetriNetUnfolderBase]: For 3370/3370 co-relation queries the response was YES. [2024-06-04 15:23:30,806 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. [2024-06-04 15:23:30,964 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 57 selfloop transitions, 9 changer transitions 0/70 dead transitions. [2024-06-04 15:23:30,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 70 transitions, 329 flow [2024-06-04 15:23:30,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-04 15:23:30,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-04 15:23:30,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 114 transitions. [2024-06-04 15:23:30,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5480769230769231 [2024-06-04 15:23:30,966 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 131 flow. Second operand 4 states and 114 transitions. [2024-06-04 15:23:30,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 70 transitions, 329 flow [2024-06-04 15:23:30,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 70 transitions, 324 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-04 15:23:30,968 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 179 flow [2024-06-04 15:23:30,968 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} [2024-06-04 15:23:30,969 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 2 predicate places. [2024-06-04 15:23:30,969 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 179 flow [2024-06-04 15:23:30,969 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) [2024-06-04 15:23:30,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:23:30,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:23:30,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-04 15:23:30,970 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)] === [2024-06-04 15:23:30,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:23:30,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1704188226, now seen corresponding path program 1 times [2024-06-04 15:23:30,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:23:30,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444255271] [2024-06-04 15:23:30,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:23:30,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:23:30,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:23:31,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:23:31,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:23:31,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444255271] [2024-06-04 15:23:31,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444255271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:23:31,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:23:31,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-04 15:23:31,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599035035] [2024-06-04 15:23:31,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:23:31,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-04 15:23:31,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:23:31,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-04 15:23:31,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-04 15:23:31,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-04 15:23:31,673 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) [2024-06-04 15:23:31,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:23:31,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-04 15:23:31,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:23:33,366 INFO L124 PetriNetUnfolderBase]: 14083/19011 cut-off events. [2024-06-04 15:23:33,367 INFO L125 PetriNetUnfolderBase]: For 9716/9716 co-relation queries the response was YES. [2024-06-04 15:23:33,401 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. [2024-06-04 15:23:33,472 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 75 selfloop transitions, 21 changer transitions 0/100 dead transitions. [2024-06-04 15:23:33,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 100 transitions, 545 flow [2024-06-04 15:23:33,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 15:23:33,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 15:23:33,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 149 transitions. [2024-06-04 15:23:33,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.573076923076923 [2024-06-04 15:23:33,474 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 179 flow. Second operand 5 states and 149 transitions. [2024-06-04 15:23:33,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 100 transitions, 545 flow [2024-06-04 15:23:33,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 100 transitions, 526 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-04 15:23:33,478 INFO L231 Difference]: Finished difference. Result has 62 places, 64 transitions, 310 flow [2024-06-04 15:23:33,478 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} [2024-06-04 15:23:33,479 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 7 predicate places. [2024-06-04 15:23:33,479 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 64 transitions, 310 flow [2024-06-04 15:23:33,479 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) [2024-06-04 15:23:33,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:23:33,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:23:33,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-04 15:23:33,480 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)] === [2024-06-04 15:23:33,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:23:33,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1844341065, now seen corresponding path program 1 times [2024-06-04 15:23:33,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:23:33,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747495106] [2024-06-04 15:23:33,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:23:33,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:23:33,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:23:34,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:23:34,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:23:34,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747495106] [2024-06-04 15:23:34,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747495106] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:23:34,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:23:34,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 15:23:34,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344992659] [2024-06-04 15:23:34,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:23:34,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 15:23:34,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:23:34,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 15:23:34,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-04 15:23:34,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-04 15:23:34,400 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) [2024-06-04 15:23:34,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:23:34,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-04 15:23:34,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:23:36,295 INFO L124 PetriNetUnfolderBase]: 14101/19036 cut-off events. [2024-06-04 15:23:36,296 INFO L125 PetriNetUnfolderBase]: For 22863/22868 co-relation queries the response was YES. [2024-06-04 15:23:36,351 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. [2024-06-04 15:23:36,433 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 85 selfloop transitions, 26 changer transitions 0/115 dead transitions. [2024-06-04 15:23:36,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 115 transitions, 714 flow [2024-06-04 15:23:36,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:23:36,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:23:36,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 175 transitions. [2024-06-04 15:23:36,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5608974358974359 [2024-06-04 15:23:36,436 INFO L175 Difference]: Start difference. First operand has 62 places, 64 transitions, 310 flow. Second operand 6 states and 175 transitions. [2024-06-04 15:23:36,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 115 transitions, 714 flow [2024-06-04 15:23:36,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 115 transitions, 702 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-04 15:23:36,463 INFO L231 Difference]: Finished difference. Result has 68 places, 69 transitions, 404 flow [2024-06-04 15:23:36,464 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} [2024-06-04 15:23:36,465 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 13 predicate places. [2024-06-04 15:23:36,465 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 69 transitions, 404 flow [2024-06-04 15:23:36,466 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) [2024-06-04 15:23:36,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:23:36,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:23:36,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-04 15:23:36,466 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)] === [2024-06-04 15:23:36,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:23:36,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1339999209, now seen corresponding path program 1 times [2024-06-04 15:23:36,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:23:36,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012175188] [2024-06-04 15:23:36,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:23:36,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:23:36,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:23:37,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:23:37,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:23:37,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012175188] [2024-06-04 15:23:37,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012175188] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:23:37,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:23:37,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:23:37,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901676284] [2024-06-04 15:23:37,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:23:37,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:23:37,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:23:37,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:23:37,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:23:37,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-04 15:23:37,419 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) [2024-06-04 15:23:37,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:23:37,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-04 15:23:37,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:23:39,234 INFO L124 PetriNetUnfolderBase]: 14130/19079 cut-off events. [2024-06-04 15:23:39,234 INFO L125 PetriNetUnfolderBase]: For 36260/36265 co-relation queries the response was YES. [2024-06-04 15:23:39,260 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. [2024-06-04 15:23:39,315 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 92 selfloop transitions, 30 changer transitions 0/126 dead transitions. [2024-06-04 15:23:39,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 126 transitions, 858 flow [2024-06-04 15:23:39,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:23:39,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:23:39,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 197 transitions. [2024-06-04 15:23:39,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5412087912087912 [2024-06-04 15:23:39,317 INFO L175 Difference]: Start difference. First operand has 68 places, 69 transitions, 404 flow. Second operand 7 states and 197 transitions. [2024-06-04 15:23:39,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 126 transitions, 858 flow [2024-06-04 15:23:39,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 126 transitions, 792 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-04 15:23:39,327 INFO L231 Difference]: Finished difference. Result has 70 places, 72 transitions, 443 flow [2024-06-04 15:23:39,327 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} [2024-06-04 15:23:39,327 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 15 predicate places. [2024-06-04 15:23:39,328 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 72 transitions, 443 flow [2024-06-04 15:23:39,328 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) [2024-06-04 15:23:39,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:23:39,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:23:39,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-04 15:23:39,330 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)] === [2024-06-04 15:23:39,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:23:39,331 INFO L85 PathProgramCache]: Analyzing trace with hash 906598089, now seen corresponding path program 1 times [2024-06-04 15:23:39,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:23:39,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369591162] [2024-06-04 15:23:39,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:23:39,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:23:39,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:23:39,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:23:39,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:23:39,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369591162] [2024-06-04 15:23:39,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369591162] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:23:39,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:23:39,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 15:23:39,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067875983] [2024-06-04 15:23:39,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:23:39,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 15:23:39,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:23:39,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 15:23:39,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-04 15:23:39,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-04 15:23:39,941 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) [2024-06-04 15:23:39,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:23:39,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-04 15:23:39,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:23:41,741 INFO L124 PetriNetUnfolderBase]: 14121/19065 cut-off events. [2024-06-04 15:23:41,742 INFO L125 PetriNetUnfolderBase]: For 51278/51278 co-relation queries the response was YES. [2024-06-04 15:23:41,785 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. [2024-06-04 15:23:41,849 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 75 selfloop transitions, 10 changer transitions 0/89 dead transitions. [2024-06-04 15:23:41,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 89 transitions, 657 flow [2024-06-04 15:23:41,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 15:23:41,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 15:23:41,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2024-06-04 15:23:41,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4423076923076923 [2024-06-04 15:23:41,854 INFO L175 Difference]: Start difference. First operand has 70 places, 72 transitions, 443 flow. Second operand 5 states and 115 transitions. [2024-06-04 15:23:41,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 89 transitions, 657 flow [2024-06-04 15:23:41,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 89 transitions, 570 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-04 15:23:41,867 INFO L231 Difference]: Finished difference. Result has 70 places, 72 transitions, 387 flow [2024-06-04 15:23:41,867 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} [2024-06-04 15:23:41,868 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 15 predicate places. [2024-06-04 15:23:41,868 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 72 transitions, 387 flow [2024-06-04 15:23:41,868 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) [2024-06-04 15:23:41,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:23:41,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:23:41,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-04 15:23:41,869 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)] === [2024-06-04 15:23:41,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:23:41,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1985166347, now seen corresponding path program 1 times [2024-06-04 15:23:41,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:23:41,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209112856] [2024-06-04 15:23:41,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:23:41,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:23:41,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:23:42,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:23:42,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:23:42,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209112856] [2024-06-04 15:23:42,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209112856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:23:42,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:23:42,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:23:42,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228434357] [2024-06-04 15:23:42,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:23:42,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:23:42,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:23:42,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:23:42,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:23:42,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-04 15:23:42,587 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) [2024-06-04 15:23:42,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:23:42,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-04 15:23:42,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:23:44,416 INFO L124 PetriNetUnfolderBase]: 14145/19098 cut-off events. [2024-06-04 15:23:44,416 INFO L125 PetriNetUnfolderBase]: For 58241/58241 co-relation queries the response was YES. [2024-06-04 15:23:44,458 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. [2024-06-04 15:23:44,518 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 90 selfloop transitions, 22 changer transitions 0/116 dead transitions. [2024-06-04 15:23:44,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 116 transitions, 829 flow [2024-06-04 15:23:44,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:23:44,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:23:44,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-06-04 15:23:44,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46794871794871795 [2024-06-04 15:23:44,519 INFO L175 Difference]: Start difference. First operand has 70 places, 72 transitions, 387 flow. Second operand 6 states and 146 transitions. [2024-06-04 15:23:44,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 116 transitions, 829 flow [2024-06-04 15:23:44,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 116 transitions, 800 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-04 15:23:44,534 INFO L231 Difference]: Finished difference. Result has 74 places, 86 transitions, 544 flow [2024-06-04 15:23:44,534 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} [2024-06-04 15:23:44,534 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 19 predicate places. [2024-06-04 15:23:44,534 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 86 transitions, 544 flow [2024-06-04 15:23:44,535 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) [2024-06-04 15:23:44,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:23:44,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:23:44,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-04 15:23:44,535 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)] === [2024-06-04 15:23:44,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:23:44,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1977609586, now seen corresponding path program 1 times [2024-06-04 15:23:44,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:23:44,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982987383] [2024-06-04 15:23:44,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:23:44,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:23:44,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:23:45,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:23:45,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:23:45,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982987383] [2024-06-04 15:23:45,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982987383] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:23:45,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:23:45,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:23:45,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509876004] [2024-06-04 15:23:45,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:23:45,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:23:45,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:23:45,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:23:45,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:23:45,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-04 15:23:45,337 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) [2024-06-04 15:23:45,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:23:45,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-04 15:23:45,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:23:47,259 INFO L124 PetriNetUnfolderBase]: 14158/19117 cut-off events. [2024-06-04 15:23:47,260 INFO L125 PetriNetUnfolderBase]: For 82276/82286 co-relation queries the response was YES. [2024-06-04 15:23:47,310 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. [2024-06-04 15:23:47,382 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 91 selfloop transitions, 25 changer transitions 0/120 dead transitions. [2024-06-04 15:23:47,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 120 transitions, 925 flow [2024-06-04 15:23:47,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:23:47,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:23:47,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-06-04 15:23:47,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46794871794871795 [2024-06-04 15:23:47,384 INFO L175 Difference]: Start difference. First operand has 74 places, 86 transitions, 544 flow. Second operand 6 states and 146 transitions. [2024-06-04 15:23:47,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 120 transitions, 925 flow [2024-06-04 15:23:47,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 120 transitions, 897 flow, removed 13 selfloop flow, removed 1 redundant places. [2024-06-04 15:23:47,423 INFO L231 Difference]: Finished difference. Result has 79 places, 90 transitions, 612 flow [2024-06-04 15:23:47,423 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} [2024-06-04 15:23:47,425 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 24 predicate places. [2024-06-04 15:23:47,425 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 90 transitions, 612 flow [2024-06-04 15:23:47,426 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) [2024-06-04 15:23:47,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:23:47,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:23:47,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-04 15:23:47,426 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)] === [2024-06-04 15:23:47,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:23:47,427 INFO L85 PathProgramCache]: Analyzing trace with hash -637544152, now seen corresponding path program 2 times [2024-06-04 15:23:47,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:23:47,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854483931] [2024-06-04 15:23:47,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:23:47,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:23:47,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:23:48,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:23:48,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:23:48,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854483931] [2024-06-04 15:23:48,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854483931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:23:48,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:23:48,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:23:48,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049621410] [2024-06-04 15:23:48,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:23:48,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:23:48,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:23:48,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:23:48,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:23:48,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-04 15:23:48,222 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) [2024-06-04 15:23:48,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:23:48,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-04 15:23:48,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:23:50,450 INFO L124 PetriNetUnfolderBase]: 14128/19183 cut-off events. [2024-06-04 15:23:50,450 INFO L125 PetriNetUnfolderBase]: For 98844/98844 co-relation queries the response was YES. [2024-06-04 15:23:50,527 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. [2024-06-04 15:23:50,604 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 95 selfloop transitions, 16 changer transitions 0/115 dead transitions. [2024-06-04 15:23:50,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 115 transitions, 910 flow [2024-06-04 15:23:50,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:23:50,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:23:50,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 147 transitions. [2024-06-04 15:23:50,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40384615384615385 [2024-06-04 15:23:50,605 INFO L175 Difference]: Start difference. First operand has 79 places, 90 transitions, 612 flow. Second operand 7 states and 147 transitions. [2024-06-04 15:23:50,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 115 transitions, 910 flow [2024-06-04 15:23:50,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 115 transitions, 866 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-04 15:23:50,700 INFO L231 Difference]: Finished difference. Result has 84 places, 92 transitions, 632 flow [2024-06-04 15:23:50,701 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} [2024-06-04 15:23:50,701 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 29 predicate places. [2024-06-04 15:23:50,701 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 92 transitions, 632 flow [2024-06-04 15:23:50,701 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) [2024-06-04 15:23:50,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:23:50,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:23:50,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-04 15:23:50,702 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)] === [2024-06-04 15:23:50,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:23:50,702 INFO L85 PathProgramCache]: Analyzing trace with hash -2121037646, now seen corresponding path program 1 times [2024-06-04 15:23:50,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:23:50,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852949366] [2024-06-04 15:23:50,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:23:50,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:23:50,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:23:51,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:23:51,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:23:51,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852949366] [2024-06-04 15:23:51,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852949366] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:23:51,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:23:51,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:23:51,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137796420] [2024-06-04 15:23:51,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:23:51,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:23:51,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:23:51,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:23:51,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:23:51,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-04 15:23:51,487 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) [2024-06-04 15:23:51,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:23:51,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-04 15:23:51,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:23:53,588 INFO L124 PetriNetUnfolderBase]: 14900/20134 cut-off events. [2024-06-04 15:23:53,588 INFO L125 PetriNetUnfolderBase]: For 110408/110427 co-relation queries the response was YES. [2024-06-04 15:23:53,679 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. [2024-06-04 15:23:53,753 INFO L140 encePairwiseOnDemand]: 34/52 looper letters, 142 selfloop transitions, 59 changer transitions 0/205 dead transitions. [2024-06-04 15:23:53,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 205 transitions, 1812 flow [2024-06-04 15:23:53,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:23:53,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:23:53,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 211 transitions. [2024-06-04 15:23:53,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5072115384615384 [2024-06-04 15:23:53,755 INFO L175 Difference]: Start difference. First operand has 84 places, 92 transitions, 632 flow. Second operand 8 states and 211 transitions. [2024-06-04 15:23:53,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 205 transitions, 1812 flow [2024-06-04 15:23:53,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 205 transitions, 1705 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-04 15:23:53,837 INFO L231 Difference]: Finished difference. Result has 90 places, 135 transitions, 1096 flow [2024-06-04 15:23:53,838 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} [2024-06-04 15:23:53,838 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 35 predicate places. [2024-06-04 15:23:53,838 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 135 transitions, 1096 flow [2024-06-04 15:23:53,839 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) [2024-06-04 15:23:53,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:23:53,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:23:53,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-04 15:23:53,839 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)] === [2024-06-04 15:23:53,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:23:53,839 INFO L85 PathProgramCache]: Analyzing trace with hash -956695306, now seen corresponding path program 2 times [2024-06-04 15:23:53,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:23:53,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703473272] [2024-06-04 15:23:53,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:23:53,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:23:53,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:23:54,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:23:54,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:23:54,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703473272] [2024-06-04 15:23:54,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703473272] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:23:54,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:23:54,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:23:54,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820306281] [2024-06-04 15:23:54,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:23:54,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:23:54,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:23:54,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:23:54,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:23:54,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-04 15:23:54,716 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) [2024-06-04 15:23:54,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:23:54,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-04 15:23:54,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:23:56,935 INFO L124 PetriNetUnfolderBase]: 15612/21081 cut-off events. [2024-06-04 15:23:56,935 INFO L125 PetriNetUnfolderBase]: For 157075/157105 co-relation queries the response was YES. [2024-06-04 15:23:57,014 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. [2024-06-04 15:23:57,099 INFO L140 encePairwiseOnDemand]: 37/52 looper letters, 124 selfloop transitions, 90 changer transitions 0/218 dead transitions. [2024-06-04 15:23:57,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 218 transitions, 2178 flow [2024-06-04 15:23:57,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:23:57,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:23:57,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-06-04 15:23:57,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-04 15:23:57,101 INFO L175 Difference]: Start difference. First operand has 90 places, 135 transitions, 1096 flow. Second operand 7 states and 182 transitions. [2024-06-04 15:23:57,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 218 transitions, 2178 flow [2024-06-04 15:23:57,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 218 transitions, 2100 flow, removed 38 selfloop flow, removed 1 redundant places. [2024-06-04 15:23:57,227 INFO L231 Difference]: Finished difference. Result has 98 places, 166 transitions, 1623 flow [2024-06-04 15:23:57,228 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} [2024-06-04 15:23:57,228 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 43 predicate places. [2024-06-04 15:23:57,228 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 166 transitions, 1623 flow [2024-06-04 15:23:57,228 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) [2024-06-04 15:23:57,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:23:57,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:23:57,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-04 15:23:57,229 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)] === [2024-06-04 15:23:57,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:23:57,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1954081528, now seen corresponding path program 3 times [2024-06-04 15:23:57,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:23:57,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552803787] [2024-06-04 15:23:57,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:23:57,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:23:57,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:23:57,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:23:57,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:23:57,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552803787] [2024-06-04 15:23:57,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552803787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:23:57,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:23:57,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:23:57,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640993075] [2024-06-04 15:23:57,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:23:57,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:23:57,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:23:57,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:23:57,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:23:58,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-04 15:23:58,000 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) [2024-06-04 15:23:58,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:23:58,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-04 15:23:58,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:24:00,508 INFO L124 PetriNetUnfolderBase]: 15754/21325 cut-off events. [2024-06-04 15:24:00,509 INFO L125 PetriNetUnfolderBase]: For 217104/217107 co-relation queries the response was YES. [2024-06-04 15:24:00,567 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. [2024-06-04 15:24:00,646 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 179 selfloop transitions, 33 changer transitions 0/216 dead transitions. [2024-06-04 15:24:00,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 216 transitions, 2402 flow [2024-06-04 15:24:00,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:24:00,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:24:00,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-04 15:24:00,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45879120879120877 [2024-06-04 15:24:00,647 INFO L175 Difference]: Start difference. First operand has 98 places, 166 transitions, 1623 flow. Second operand 7 states and 167 transitions. [2024-06-04 15:24:00,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 216 transitions, 2402 flow [2024-06-04 15:24:00,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 216 transitions, 2293 flow, removed 45 selfloop flow, removed 2 redundant places. [2024-06-04 15:24:00,831 INFO L231 Difference]: Finished difference. Result has 104 places, 178 transitions, 1768 flow [2024-06-04 15:24:00,832 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} [2024-06-04 15:24:00,832 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 49 predicate places. [2024-06-04 15:24:00,832 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 178 transitions, 1768 flow [2024-06-04 15:24:00,832 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) [2024-06-04 15:24:00,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:24:00,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:24:00,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-04 15:24:00,833 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)] === [2024-06-04 15:24:00,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:24:00,833 INFO L85 PathProgramCache]: Analyzing trace with hash 935212044, now seen corresponding path program 4 times [2024-06-04 15:24:00,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:24:00,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49738192] [2024-06-04 15:24:00,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:24:00,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:24:00,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:24:01,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:24:01,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:24:01,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49738192] [2024-06-04 15:24:01,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49738192] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:24:01,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:24:01,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:24:01,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797437555] [2024-06-04 15:24:01,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:24:01,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:24:01,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:24:01,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:24:01,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:24:01,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-04 15:24:01,573 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) [2024-06-04 15:24:01,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:24:01,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-04 15:24:01,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:24:03,995 INFO L124 PetriNetUnfolderBase]: 15806/21394 cut-off events. [2024-06-04 15:24:03,995 INFO L125 PetriNetUnfolderBase]: For 234902/234907 co-relation queries the response was YES. [2024-06-04 15:24:04,119 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. [2024-06-04 15:24:04,215 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 185 selfloop transitions, 53 changer transitions 0/242 dead transitions. [2024-06-04 15:24:04,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 242 transitions, 2820 flow [2024-06-04 15:24:04,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:24:04,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:24:04,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-04 15:24:04,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4697802197802198 [2024-06-04 15:24:04,217 INFO L175 Difference]: Start difference. First operand has 104 places, 178 transitions, 1768 flow. Second operand 7 states and 171 transitions. [2024-06-04 15:24:04,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 242 transitions, 2820 flow [2024-06-04 15:24:04,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 242 transitions, 2698 flow, removed 34 selfloop flow, removed 4 redundant places. [2024-06-04 15:24:04,436 INFO L231 Difference]: Finished difference. Result has 108 places, 198 transitions, 2099 flow [2024-06-04 15:24:04,436 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} [2024-06-04 15:24:04,437 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 53 predicate places. [2024-06-04 15:24:04,437 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 198 transitions, 2099 flow [2024-06-04 15:24:04,437 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) [2024-06-04 15:24:04,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:24:04,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:24:04,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-04 15:24:04,437 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)] === [2024-06-04 15:24:04,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:24:04,438 INFO L85 PathProgramCache]: Analyzing trace with hash -779317708, now seen corresponding path program 1 times [2024-06-04 15:24:04,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:24:04,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585913056] [2024-06-04 15:24:04,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:24:04,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:24:04,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:24:05,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:24:05,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:24:05,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585913056] [2024-06-04 15:24:05,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585913056] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:24:05,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:24:05,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:24:05,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687119059] [2024-06-04 15:24:05,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:24:05,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:24:05,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:24:05,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:24:05,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:24:05,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-04 15:24:05,619 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) [2024-06-04 15:24:05,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:24:05,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-04 15:24:05,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:24:09,062 INFO L124 PetriNetUnfolderBase]: 15826/21421 cut-off events. [2024-06-04 15:24:09,062 INFO L125 PetriNetUnfolderBase]: For 259182/259185 co-relation queries the response was YES. [2024-06-04 15:24:09,135 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. [2024-06-04 15:24:09,242 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 199 selfloop transitions, 34 changer transitions 0/237 dead transitions. [2024-06-04 15:24:09,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 237 transitions, 2823 flow [2024-06-04 15:24:09,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:24:09,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:24:09,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-04 15:24:09,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-06-04 15:24:09,244 INFO L175 Difference]: Start difference. First operand has 108 places, 198 transitions, 2099 flow. Second operand 7 states and 168 transitions. [2024-06-04 15:24:09,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 237 transitions, 2823 flow [2024-06-04 15:24:09,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 237 transitions, 2718 flow, removed 41 selfloop flow, removed 3 redundant places. [2024-06-04 15:24:09,479 INFO L231 Difference]: Finished difference. Result has 112 places, 202 transitions, 2131 flow [2024-06-04 15:24:09,479 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} [2024-06-04 15:24:09,480 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 57 predicate places. [2024-06-04 15:24:09,480 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 202 transitions, 2131 flow [2024-06-04 15:24:09,480 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) [2024-06-04 15:24:09,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:24:09,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:24:09,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-04 15:24:09,480 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)] === [2024-06-04 15:24:09,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:24:09,481 INFO L85 PathProgramCache]: Analyzing trace with hash -2102601317, now seen corresponding path program 1 times [2024-06-04 15:24:09,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:24:09,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942702553] [2024-06-04 15:24:09,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:24:09,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:24:09,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:24:10,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:24:10,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:24:10,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942702553] [2024-06-04 15:24:10,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942702553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:24:10,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:24:10,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 15:24:10,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295248150] [2024-06-04 15:24:10,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:24:10,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 15:24:10,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:24:10,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 15:24:10,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-04 15:24:10,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-04 15:24:10,096 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) [2024-06-04 15:24:10,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:24:10,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-04 15:24:10,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:24:13,056 INFO L124 PetriNetUnfolderBase]: 15819/21411 cut-off events. [2024-06-04 15:24:13,056 INFO L125 PetriNetUnfolderBase]: For 282558/282558 co-relation queries the response was YES. [2024-06-04 15:24:13,124 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. [2024-06-04 15:24:13,198 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 200 selfloop transitions, 11 changer transitions 0/215 dead transitions. [2024-06-04 15:24:13,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 215 transitions, 2593 flow [2024-06-04 15:24:13,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 15:24:13,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 15:24:13,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 111 transitions. [2024-06-04 15:24:13,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4269230769230769 [2024-06-04 15:24:13,200 INFO L175 Difference]: Start difference. First operand has 112 places, 202 transitions, 2131 flow. Second operand 5 states and 111 transitions. [2024-06-04 15:24:13,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 215 transitions, 2593 flow [2024-06-04 15:24:13,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 215 transitions, 2474 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-04 15:24:13,381 INFO L231 Difference]: Finished difference. Result has 112 places, 202 transitions, 2043 flow [2024-06-04 15:24:13,381 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} [2024-06-04 15:24:13,382 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 57 predicate places. [2024-06-04 15:24:13,382 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 202 transitions, 2043 flow [2024-06-04 15:24:13,382 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) [2024-06-04 15:24:13,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:24:13,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:24:13,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-04 15:24:13,382 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)] === [2024-06-04 15:24:13,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:24:13,383 INFO L85 PathProgramCache]: Analyzing trace with hash 842264265, now seen corresponding path program 1 times [2024-06-04 15:24:13,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:24:13,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164837533] [2024-06-04 15:24:13,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:24:13,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:24:13,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:24:14,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:24:14,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:24:14,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164837533] [2024-06-04 15:24:14,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164837533] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:24:14,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:24:14,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:24:14,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363505980] [2024-06-04 15:24:14,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:24:14,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:24:14,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:24:14,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:24:14,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:24:14,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-04 15:24:14,380 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) [2024-06-04 15:24:14,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:24:14,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-04 15:24:14,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:24:17,200 INFO L124 PetriNetUnfolderBase]: 15911/21483 cut-off events. [2024-06-04 15:24:17,201 INFO L125 PetriNetUnfolderBase]: For 295944/295986 co-relation queries the response was YES. [2024-06-04 15:24:17,263 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. [2024-06-04 15:24:17,341 INFO L140 encePairwiseOnDemand]: 36/52 looper letters, 213 selfloop transitions, 59 changer transitions 0/276 dead transitions. [2024-06-04 15:24:17,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 276 transitions, 3035 flow [2024-06-04 15:24:17,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:24:17,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:24:17,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2024-06-04 15:24:17,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4551282051282051 [2024-06-04 15:24:17,343 INFO L175 Difference]: Start difference. First operand has 112 places, 202 transitions, 2043 flow. Second operand 9 states and 213 transitions. [2024-06-04 15:24:17,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 276 transitions, 3035 flow [2024-06-04 15:24:17,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 276 transitions, 2999 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-04 15:24:17,498 INFO L231 Difference]: Finished difference. Result has 119 places, 225 transitions, 2399 flow [2024-06-04 15:24:17,498 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} [2024-06-04 15:24:17,498 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 64 predicate places. [2024-06-04 15:24:17,498 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 225 transitions, 2399 flow [2024-06-04 15:24:17,499 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) [2024-06-04 15:24:17,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:24:17,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:24:17,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-04 15:24:17,499 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)] === [2024-06-04 15:24:17,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:24:17,499 INFO L85 PathProgramCache]: Analyzing trace with hash -628486669, now seen corresponding path program 2 times [2024-06-04 15:24:17,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:24:17,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535421546] [2024-06-04 15:24:17,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:24:17,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:24:17,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:24:18,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:24:18,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:24:18,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535421546] [2024-06-04 15:24:18,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535421546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:24:18,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:24:18,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:24:18,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551711157] [2024-06-04 15:24:18,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:24:18,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:24:18,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:24:18,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:24:18,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:24:18,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-04 15:24:18,436 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) [2024-06-04 15:24:18,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:24:18,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-04 15:24:18,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:24:21,628 INFO L124 PetriNetUnfolderBase]: 15999/21604 cut-off events. [2024-06-04 15:24:21,628 INFO L125 PetriNetUnfolderBase]: For 337604/337648 co-relation queries the response was YES. [2024-06-04 15:24:21,723 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. [2024-06-04 15:24:21,825 INFO L140 encePairwiseOnDemand]: 36/52 looper letters, 219 selfloop transitions, 83 changer transitions 0/306 dead transitions. [2024-06-04 15:24:21,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 306 transitions, 3615 flow [2024-06-04 15:24:21,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:24:21,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:24:21,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 241 transitions. [2024-06-04 15:24:21,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634615384615385 [2024-06-04 15:24:21,827 INFO L175 Difference]: Start difference. First operand has 119 places, 225 transitions, 2399 flow. Second operand 10 states and 241 transitions. [2024-06-04 15:24:21,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 306 transitions, 3615 flow [2024-06-04 15:24:22,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 306 transitions, 3536 flow, removed 34 selfloop flow, removed 2 redundant places. [2024-06-04 15:24:22,139 INFO L231 Difference]: Finished difference. Result has 129 places, 245 transitions, 2805 flow [2024-06-04 15:24:22,139 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} [2024-06-04 15:24:22,139 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 74 predicate places. [2024-06-04 15:24:22,139 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 245 transitions, 2805 flow [2024-06-04 15:24:22,140 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) [2024-06-04 15:24:22,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:24:22,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:24:22,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-04 15:24:22,140 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)] === [2024-06-04 15:24:22,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:24:22,140 INFO L85 PathProgramCache]: Analyzing trace with hash 998300992, now seen corresponding path program 1 times [2024-06-04 15:24:22,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:24:22,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661842700] [2024-06-04 15:24:22,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:24:22,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:24:22,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:24:22,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:24:22,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:24:22,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661842700] [2024-06-04 15:24:22,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661842700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:24:22,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:24:22,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:24:22,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146082905] [2024-06-04 15:24:22,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:24:22,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:24:22,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:24:22,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:24:22,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:24:23,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-04 15:24:23,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 245 transitions, 2805 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) [2024-06-04 15:24:23,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:24:23,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-04 15:24:23,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:24:26,374 INFO L124 PetriNetUnfolderBase]: 16349/22091 cut-off events. [2024-06-04 15:24:26,374 INFO L125 PetriNetUnfolderBase]: For 391218/391291 co-relation queries the response was YES. [2024-06-04 15:24:26,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131776 conditions, 22091 events. 16349/22091 cut-off events. For 391218/391291 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 114388 event pairs, 6398 based on Foata normal form. 79/22164 useless extension candidates. Maximal degree in co-relation 131720. Up to 20367 conditions per place. [2024-06-04 15:24:26,574 INFO L140 encePairwiseOnDemand]: 35/52 looper letters, 227 selfloop transitions, 113 changer transitions 0/344 dead transitions. [2024-06-04 15:24:26,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 344 transitions, 4567 flow [2024-06-04 15:24:26,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:24:26,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:24:26,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-06-04 15:24:26,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5024038461538461 [2024-06-04 15:24:26,575 INFO L175 Difference]: Start difference. First operand has 129 places, 245 transitions, 2805 flow. Second operand 8 states and 209 transitions. [2024-06-04 15:24:26,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 344 transitions, 4567 flow [2024-06-04 15:24:26,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 344 transitions, 4359 flow, removed 73 selfloop flow, removed 6 redundant places. [2024-06-04 15:24:26,973 INFO L231 Difference]: Finished difference. Result has 133 places, 269 transitions, 3266 flow [2024-06-04 15:24:26,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2629, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3266, PETRI_PLACES=133, PETRI_TRANSITIONS=269} [2024-06-04 15:24:26,973 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 78 predicate places. [2024-06-04 15:24:26,973 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 269 transitions, 3266 flow [2024-06-04 15:24:26,974 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) [2024-06-04 15:24:26,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:24:26,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:24:26,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-04 15:24:26,974 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:24:26,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:24:26,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1023319852, now seen corresponding path program 2 times [2024-06-04 15:24:26,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:24:26,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247085626] [2024-06-04 15:24:26,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:24:26,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:24:26,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:24:27,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:24:27,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:24:27,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247085626] [2024-06-04 15:24:27,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247085626] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:24:27,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:24:27,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:24:27,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641269003] [2024-06-04 15:24:27,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:24:27,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:24:27,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:24:27,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:24:27,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:24:27,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-04 15:24:27,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 269 transitions, 3266 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) [2024-06-04 15:24:27,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:24:27,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-04 15:24:27,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand