./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix047_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/mix047_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/mix047_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-05-21_14-57-05.files/protection/mix047_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 15:18:48,553 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-04 15:18:48,622 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-04 15:18:48,629 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-04 15:18:48,630 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-04 15:18:48,655 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-04 15:18:48,656 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-04 15:18:48,656 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-04 15:18:48,657 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-04 15:18:48,660 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-04 15:18:48,660 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-04 15:18:48,660 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-04 15:18:48,661 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-04 15:18:48,662 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-04 15:18:48,662 INFO L153 SettingsManager]: * Use SBE=true [2024-06-04 15:18:48,662 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-04 15:18:48,663 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-04 15:18:48,663 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-04 15:18:48,663 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-04 15:18:48,663 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-04 15:18:48,664 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-04 15:18:48,664 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-04 15:18:48,664 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-04 15:18:48,664 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-04 15:18:48,665 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-04 15:18:48,665 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-04 15:18:48,665 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-04 15:18:48,665 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-04 15:18:48,666 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-04 15:18:48,666 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-04 15:18:48,667 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-04 15:18:48,668 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-04 15:18:48,668 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 15:18:48,668 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-04 15:18:48,669 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-04 15:18:48,669 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-04 15:18:48,669 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-04 15:18:48,669 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-04 15:18:48,670 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-04 15:18:48,670 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-04 15:18:48,670 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-04 15:18:48,671 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-04 15:18:48,671 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-04 15:18:48,671 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-04 15:18:48,890 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-04 15:18:48,918 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-04 15:18:48,921 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-04 15:18:48,923 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-04 15:18:48,923 INFO L274 PluginConnector]: CDTParser initialized [2024-06-04 15:18:48,924 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix047_power.oepc_pso.oepc_rmo.oepc.i [2024-06-04 15:18:50,046 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-04 15:18:50,238 INFO L384 CDTParser]: Found 1 translation units. [2024-06-04 15:18:50,238 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix047_power.oepc_pso.oepc_rmo.oepc.i [2024-06-04 15:18:50,252 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11034f8f2/3aff5485fa23442d83ef7664a776aa78/FLAG7ead8cbb9 [2024-06-04 15:18:50,264 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11034f8f2/3aff5485fa23442d83ef7664a776aa78 [2024-06-04 15:18:50,266 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-04 15:18:50,267 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-04 15:18:50,267 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/mix047_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-04 15:18:50,457 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-04 15:18:50,458 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-04 15:18:50,459 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-04 15:18:50,459 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-04 15:18:50,463 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-04 15:18:50,463 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 03:18:50" (1/2) ... [2024-06-04 15:18:50,465 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9e077be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:18:50, skipping insertion in model container [2024-06-04 15:18:50,465 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 03:18:50" (1/2) ... [2024-06-04 15:18:50,466 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@74e05b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:18:50, skipping insertion in model container [2024-06-04 15:18:50,466 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 03:18:50" (2/2) ... [2024-06-04 15:18:50,467 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9e077be and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:18:50, skipping insertion in model container [2024-06-04 15:18:50,467 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 03:18:50" (2/2) ... [2024-06-04 15:18:50,467 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-04 15:18:50,575 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-04 15:18:50,577 INFO L97 edCorrectnessWitness]: Location invariant before [L872-L872] (((((((((((((((((((((! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2))) && (! multithreaded || ((0 <= b$mem_tmp && b$mem_tmp <= 1) && (b$mem_tmp == 0 || b$mem_tmp == 1)))) && (! multithreaded || b$flush_delayed == (_Bool)0)) && (! multithreaded || b$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= b$w_buff1 && b$w_buff1 <= 1) && (b$w_buff1 == 0 || b$w_buff1 == 1)))) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || ((0 <= b && b <= 1) && (b == 0 || b == 1)))) && (! multithreaded || b$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || b$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= b$w_buff0 && b$w_buff0 <= 1) && (b$w_buff0 == 0 || b$w_buff0 == 1)))) && (! multithreaded || b$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || b$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || b$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || b$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || b$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || b$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || b$r_buff0_thd3 == (_Bool)0) [2024-06-04 15:18:50,577 INFO L97 edCorrectnessWitness]: Location invariant before [L874-L874] (((((((((((((((((((((! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2))) && (! multithreaded || ((0 <= b$mem_tmp && b$mem_tmp <= 1) && (b$mem_tmp == 0 || b$mem_tmp == 1)))) && (! multithreaded || b$flush_delayed == (_Bool)0)) && (! multithreaded || b$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= b$w_buff1 && b$w_buff1 <= 1) && (b$w_buff1 == 0 || b$w_buff1 == 1)))) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || ((0 <= b && b <= 1) && (b == 0 || b == 1)))) && (! multithreaded || b$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || b$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= b$w_buff0 && b$w_buff0 <= 1) && (b$w_buff0 == 0 || b$w_buff0 == 1)))) && (! multithreaded || b$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || b$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || b$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || b$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || b$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || b$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || b$r_buff0_thd3 == (_Bool)0) [2024-06-04 15:18:50,577 INFO L97 edCorrectnessWitness]: Location invariant before [L875-L875] (((((((((((((((((((((! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2))) && (! multithreaded || ((0 <= b$mem_tmp && b$mem_tmp <= 1) && (b$mem_tmp == 0 || b$mem_tmp == 1)))) && (! multithreaded || b$flush_delayed == (_Bool)0)) && (! multithreaded || b$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= b$w_buff1 && b$w_buff1 <= 1) && (b$w_buff1 == 0 || b$w_buff1 == 1)))) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || ((0 <= b && b <= 1) && (b == 0 || b == 1)))) && (! multithreaded || b$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || b$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= b$w_buff0 && b$w_buff0 <= 1) && (b$w_buff0 == 0 || b$w_buff0 == 1)))) && (! multithreaded || b$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || b$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || b$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || b$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || b$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || b$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || b$r_buff0_thd3 == (_Bool)0) [2024-06-04 15:18:50,577 INFO L97 edCorrectnessWitness]: Location invariant before [L870-L870] (((((((((((((((((((((! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2))) && (! multithreaded || ((0 <= b$mem_tmp && b$mem_tmp <= 1) && (b$mem_tmp == 0 || b$mem_tmp == 1)))) && (! multithreaded || b$flush_delayed == (_Bool)0)) && (! multithreaded || b$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= b$w_buff1 && b$w_buff1 <= 1) && (b$w_buff1 == 0 || b$w_buff1 == 1)))) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || ((0 <= b && b <= 1) && (b == 0 || b == 1)))) && (! multithreaded || b$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || b$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= b$w_buff0 && b$w_buff0 <= 1) && (b$w_buff0 == 0 || b$w_buff0 == 1)))) && (! multithreaded || b$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || b$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || b$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || b$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || b$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || b$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || b$r_buff0_thd3 == (_Bool)0) [2024-06-04 15:18:50,577 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-04 15:18:50,578 INFO L106 edCorrectnessWitness]: ghost_update [L868-L868] multithreaded = 1; [2024-06-04 15:18:50,618 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-04 15:18:50,974 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 15:18:50,983 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 15:18:51,147 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 15:18:51,175 INFO L206 MainTranslator]: Completed translation [2024-06-04 15:18:51,181 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:18:51 WrapperNode [2024-06-04 15:18:51,181 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-04 15:18:51,182 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-04 15:18:51,182 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-04 15:18:51,182 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-04 15:18:51,189 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:18:51" (1/1) ... [2024-06-04 15:18:51,206 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:18:51" (1/1) ... [2024-06-04 15:18:51,274 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 138 [2024-06-04 15:18:51,274 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-04 15:18:51,275 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-04 15:18:51,275 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-04 15:18:51,275 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-04 15:18:51,283 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:18:51" (1/1) ... [2024-06-04 15:18:51,284 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:18:51" (1/1) ... [2024-06-04 15:18:51,287 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:18:51" (1/1) ... [2024-06-04 15:18:51,304 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 15:18:51,304 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:18:51" (1/1) ... [2024-06-04 15:18:51,304 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:18:51" (1/1) ... [2024-06-04 15:18:51,315 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:18:51" (1/1) ... [2024-06-04 15:18:51,317 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:18:51" (1/1) ... [2024-06-04 15:18:51,319 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:18:51" (1/1) ... [2024-06-04 15:18:51,321 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:18:51" (1/1) ... [2024-06-04 15:18:51,324 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-04 15:18:51,325 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-04 15:18:51,325 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-04 15:18:51,325 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-04 15:18:51,326 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:18:51" (1/1) ... [2024-06-04 15:18:51,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 15:18:51,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 15:18:51,357 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 15:18:51,365 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 15:18:51,392 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-04 15:18:51,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-04 15:18:51,393 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-04 15:18:51,393 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-04 15:18:51,394 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-04 15:18:51,394 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-04 15:18:51,394 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-04 15:18:51,394 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-04 15:18:51,394 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-04 15:18:51,394 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-04 15:18:51,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-04 15:18:51,395 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-04 15:18:51,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-04 15:18:51,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-04 15:18:51,397 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 15:18:51,534 INFO L244 CfgBuilder]: Building ICFG [2024-06-04 15:18:51,535 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-04 15:18:51,902 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-04 15:18:51,902 INFO L293 CfgBuilder]: Performing block encoding [2024-06-04 15:18:52,091 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-04 15:18:52,091 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-04 15:18:52,092 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 03:18:52 BoogieIcfgContainer [2024-06-04 15:18:52,092 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-04 15:18:52,096 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-04 15:18:52,096 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-04 15:18:52,098 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-04 15:18:52,098 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.06 03:18:50" (1/4) ... [2024-06-04 15:18:52,099 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@657cb8bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 03:18:52, skipping insertion in model container [2024-06-04 15:18:52,099 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 03:18:50" (2/4) ... [2024-06-04 15:18:52,100 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@657cb8bf and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 03:18:52, skipping insertion in model container [2024-06-04 15:18:52,100 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:18:51" (3/4) ... [2024-06-04 15:18:52,100 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@657cb8bf and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 03:18:52, skipping insertion in model container [2024-06-04 15:18:52,100 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 03:18:52" (4/4) ... [2024-06-04 15:18:52,101 INFO L112 eAbstractionObserver]: Analyzing ICFG mix047_power.oepc_pso.oepc_rmo.oepc.i [2024-06-04 15:18:52,147 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-04 15:18:52,147 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-04 15:18:52,147 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-04 15:18:52,195 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-04 15:18:52,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 67 places, 54 transitions, 124 flow [2024-06-04 15:18:52,257 INFO L124 PetriNetUnfolderBase]: 0/50 cut-off events. [2024-06-04 15:18:52,258 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 15:18:52,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 50 events. 0/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 88 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-04 15:18:52,259 INFO L82 GeneralOperation]: Start removeDead. Operand has 67 places, 54 transitions, 124 flow [2024-06-04 15:18:52,262 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 44 transitions, 100 flow [2024-06-04 15:18:52,276 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-04 15:18:52,281 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;@66f538b4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-04 15:18:52,281 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-04 15:18:52,285 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-04 15:18:52,285 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-06-04 15:18:52,286 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 15:18:52,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:18:52,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-04 15:18:52,286 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 15:18:52,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:18:52,291 INFO L85 PathProgramCache]: Analyzing trace with hash -227066049, now seen corresponding path program 1 times [2024-06-04 15:18:52,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:18:52,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987872364] [2024-06-04 15:18:52,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:18:52,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:18:52,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:18:53,233 INFO 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 15:18:53,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:18:53,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987872364] [2024-06-04 15:18:53,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987872364] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:18:53,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:18:53,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-04 15:18:53,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720188511] [2024-06-04 15:18:53,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:18:53,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-04 15:18:53,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:18:53,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-04 15:18:53,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-04 15:18:53,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-04 15:18:53,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:53,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:18:53,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-04 15:18:53,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:18:55,784 INFO L124 PetriNetUnfolderBase]: 16127/22058 cut-off events. [2024-06-04 15:18:55,785 INFO L125 PetriNetUnfolderBase]: For 255/255 co-relation queries the response was YES. [2024-06-04 15:18:55,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44276 conditions, 22058 events. 16127/22058 cut-off events. For 255/255 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 118963 event pairs, 12777 based on Foata normal form. 1/21550 useless extension candidates. Maximal degree in co-relation 44260. Up to 21681 conditions per place. [2024-06-04 15:18:55,897 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 48 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2024-06-04 15:18:55,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 58 transitions, 243 flow [2024-06-04 15:18:55,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-04 15:18:55,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-04 15:18:55,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2024-06-04 15:18:55,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5740740740740741 [2024-06-04 15:18:55,910 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 100 flow. Second operand 3 states and 93 transitions. [2024-06-04 15:18:55,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 58 transitions, 243 flow [2024-06-04 15:18:55,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 58 transitions, 236 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-04 15:18:55,915 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 135 flow [2024-06-04 15:18:55,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2024-06-04 15:18:55,919 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -1 predicate places. [2024-06-04 15:18:55,919 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 135 flow [2024-06-04 15:18:55,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:55,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:18:55,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:18:55,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-04 15:18:55,920 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 15:18:55,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:18:55,921 INFO L85 PathProgramCache]: Analyzing trace with hash 832910750, now seen corresponding path program 1 times [2024-06-04 15:18:55,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:18:55,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266543826] [2024-06-04 15:18:55,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:18:55,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:18:55,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:18:56,674 INFO 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 15:18:56,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:18:56,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266543826] [2024-06-04 15:18:56,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266543826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:18:56,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:18:56,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-04 15:18:56,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952038654] [2024-06-04 15:18:56,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:18:56,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-04 15:18:56,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:18:56,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-04 15:18:56,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-04 15:18:56,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-04 15:18:56,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 135 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:56,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:18:56,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-04 15:18:56,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:18:58,994 INFO L124 PetriNetUnfolderBase]: 16117/22044 cut-off events. [2024-06-04 15:18:58,994 INFO L125 PetriNetUnfolderBase]: For 3802/3802 co-relation queries the response was YES. [2024-06-04 15:18:59,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49419 conditions, 22044 events. 16117/22044 cut-off events. For 3802/3802 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 118776 event pairs, 11693 based on Foata normal form. 4/21794 useless extension candidates. Maximal degree in co-relation 49404. Up to 21646 conditions per place. [2024-06-04 15:18:59,092 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 58 selfloop transitions, 9 changer transitions 0/72 dead transitions. [2024-06-04 15:18:59,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 72 transitions, 335 flow [2024-06-04 15:18:59,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-04 15:18:59,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-04 15:18:59,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2024-06-04 15:18:59,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5509259259259259 [2024-06-04 15:18:59,094 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 135 flow. Second operand 4 states and 119 transitions. [2024-06-04 15:18:59,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 72 transitions, 335 flow [2024-06-04 15:18:59,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 72 transitions, 330 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-04 15:18:59,097 INFO L231 Difference]: Finished difference. Result has 59 places, 52 transitions, 183 flow [2024-06-04 15:18:59,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=183, PETRI_PLACES=59, PETRI_TRANSITIONS=52} [2024-06-04 15:18:59,098 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 2 predicate places. [2024-06-04 15:18:59,098 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 52 transitions, 183 flow [2024-06-04 15:18:59,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:59,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:18:59,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:18:59,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-04 15:18:59,099 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 15:18:59,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:18:59,099 INFO L85 PathProgramCache]: Analyzing trace with hash 50431152, now seen corresponding path program 1 times [2024-06-04 15:18:59,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:18:59,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526744034] [2024-06-04 15:18:59,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:18:59,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:18:59,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:19:00,028 INFO 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 15:19:00,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:19:00,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526744034] [2024-06-04 15:19:00,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526744034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:19:00,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:19:00,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-04 15:19:00,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806806845] [2024-06-04 15:19:00,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:19:00,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-04 15:19:00,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:19:00,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-04 15:19:00,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-04 15:19:00,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-04 15:19:00,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 52 transitions, 183 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:00,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:19:00,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-04 15:19:00,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:19:02,175 INFO L124 PetriNetUnfolderBase]: 16135/22096 cut-off events. [2024-06-04 15:19:02,175 INFO L125 PetriNetUnfolderBase]: For 10985/10985 co-relation queries the response was YES. [2024-06-04 15:19:02,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54659 conditions, 22096 events. 16135/22096 cut-off events. For 10985/10985 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 119543 event pairs, 9888 based on Foata normal form. 7/21868 useless extension candidates. Maximal degree in co-relation 54642. Up to 21567 conditions per place. [2024-06-04 15:19:02,252 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 76 selfloop transitions, 21 changer transitions 0/102 dead transitions. [2024-06-04 15:19:02,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 102 transitions, 551 flow [2024-06-04 15:19:02,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 15:19:02,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 15:19:02,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 155 transitions. [2024-06-04 15:19:02,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5740740740740741 [2024-06-04 15:19:02,254 INFO L175 Difference]: Start difference. First operand has 59 places, 52 transitions, 183 flow. Second operand 5 states and 155 transitions. [2024-06-04 15:19:02,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 102 transitions, 551 flow [2024-06-04 15:19:02,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 102 transitions, 532 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-04 15:19:02,258 INFO L231 Difference]: Finished difference. Result has 64 places, 66 transitions, 314 flow [2024-06-04 15:19:02,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=314, PETRI_PLACES=64, PETRI_TRANSITIONS=66} [2024-06-04 15:19:02,259 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 7 predicate places. [2024-06-04 15:19:02,259 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 66 transitions, 314 flow [2024-06-04 15:19:02,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:02,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:19:02,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:19:02,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-04 15:19:02,260 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 15:19:02,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:19:02,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1563367421, now seen corresponding path program 1 times [2024-06-04 15:19:02,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:19:02,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52833046] [2024-06-04 15:19:02,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:19:02,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:19:02,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:19:03,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:19:03,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:19:03,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52833046] [2024-06-04 15:19:03,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52833046] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:19:03,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:19:03,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 15:19:03,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532951135] [2024-06-04 15:19:03,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:19:03,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 15:19:03,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:19:03,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 15:19:03,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-04 15:19:03,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-04 15:19:03,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 66 transitions, 314 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 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 15:19:03,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:19:03,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-04 15:19:03,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:19:05,690 INFO L124 PetriNetUnfolderBase]: 16153/22121 cut-off events. [2024-06-04 15:19:05,691 INFO L125 PetriNetUnfolderBase]: For 25906/25911 co-relation queries the response was YES. [2024-06-04 15:19:05,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62785 conditions, 22121 events. 16153/22121 cut-off events. For 25906/25911 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 119379 event pairs, 8807 based on Foata normal form. 11/21897 useless extension candidates. Maximal degree in co-relation 62765. Up to 21553 conditions per place. [2024-06-04 15:19:05,851 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 86 selfloop transitions, 26 changer transitions 0/117 dead transitions. [2024-06-04 15:19:05,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 117 transitions, 720 flow [2024-06-04 15:19:05,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:19:05,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:19:05,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 182 transitions. [2024-06-04 15:19:05,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5617283950617284 [2024-06-04 15:19:05,856 INFO L175 Difference]: Start difference. First operand has 64 places, 66 transitions, 314 flow. Second operand 6 states and 182 transitions. [2024-06-04 15:19:05,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 117 transitions, 720 flow [2024-06-04 15:19:05,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 117 transitions, 708 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-04 15:19:05,870 INFO L231 Difference]: Finished difference. Result has 70 places, 71 transitions, 408 flow [2024-06-04 15:19:05,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=408, PETRI_PLACES=70, PETRI_TRANSITIONS=71} [2024-06-04 15:19:05,871 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 13 predicate places. [2024-06-04 15:19:05,871 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 71 transitions, 408 flow [2024-06-04 15:19:05,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 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 15:19:05,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:19:05,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:19:05,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-04 15:19:05,872 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 15:19:05,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:19:05,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1219751535, now seen corresponding path program 1 times [2024-06-04 15:19:05,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:19:05,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787254238] [2024-06-04 15:19:05,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:19:05,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:19:05,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:19:06,923 INFO 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 15:19:06,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:19:06,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787254238] [2024-06-04 15:19:06,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787254238] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:19:06,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:19:06,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:19:06,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116481922] [2024-06-04 15:19:06,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:19:06,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:19:06,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:19:06,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:19:06,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:19:07,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-04 15:19:07,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 71 transitions, 408 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:07,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:19:07,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-04 15:19:07,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:19:09,196 INFO L124 PetriNetUnfolderBase]: 16182/22164 cut-off events. [2024-06-04 15:19:09,196 INFO L125 PetriNetUnfolderBase]: For 40951/40956 co-relation queries the response was YES. [2024-06-04 15:19:09,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69098 conditions, 22164 events. 16182/22164 cut-off events. For 40951/40956 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 119943 event pairs, 7559 based on Foata normal form. 18/21947 useless extension candidates. Maximal degree in co-relation 69075. Up to 21518 conditions per place. [2024-06-04 15:19:09,327 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 93 selfloop transitions, 30 changer transitions 0/128 dead transitions. [2024-06-04 15:19:09,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 128 transitions, 864 flow [2024-06-04 15:19:09,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:19:09,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:19:09,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 205 transitions. [2024-06-04 15:19:09,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5423280423280423 [2024-06-04 15:19:09,331 INFO L175 Difference]: Start difference. First operand has 70 places, 71 transitions, 408 flow. Second operand 7 states and 205 transitions. [2024-06-04 15:19:09,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 128 transitions, 864 flow [2024-06-04 15:19:09,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 128 transitions, 798 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-04 15:19:09,349 INFO L231 Difference]: Finished difference. Result has 72 places, 74 transitions, 447 flow [2024-06-04 15:19:09,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=447, PETRI_PLACES=72, PETRI_TRANSITIONS=74} [2024-06-04 15:19:09,350 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 15 predicate places. [2024-06-04 15:19:09,350 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 74 transitions, 447 flow [2024-06-04 15:19:09,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:09,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:19:09,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:19:09,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-04 15:19:09,351 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 15:19:09,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:19:09,351 INFO L85 PathProgramCache]: Analyzing trace with hash 129195159, now seen corresponding path program 1 times [2024-06-04 15:19:09,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:19:09,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774362066] [2024-06-04 15:19:09,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:19:09,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:19:09,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:19:10,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:19:10,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:19:10,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774362066] [2024-06-04 15:19:10,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774362066] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:19:10,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:19:10,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 15:19:10,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581904046] [2024-06-04 15:19:10,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:19:10,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 15:19:10,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:19:10,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 15:19:10,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-04 15:19:10,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-04 15:19:10,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 74 transitions, 447 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:10,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:19:10,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-04 15:19:10,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:19:12,430 INFO L124 PetriNetUnfolderBase]: 16173/22135 cut-off events. [2024-06-04 15:19:12,431 INFO L125 PetriNetUnfolderBase]: For 57966/57966 co-relation queries the response was YES. [2024-06-04 15:19:12,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74040 conditions, 22135 events. 16173/22135 cut-off events. For 57966/57966 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 119340 event pairs, 8713 based on Foata normal form. 3/21892 useless extension candidates. Maximal degree in co-relation 74016. Up to 21733 conditions per place. [2024-06-04 15:19:12,536 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 76 selfloop transitions, 10 changer transitions 0/91 dead transitions. [2024-06-04 15:19:12,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 91 transitions, 663 flow [2024-06-04 15:19:12,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 15:19:12,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 15:19:12,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-06-04 15:19:12,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44814814814814813 [2024-06-04 15:19:12,537 INFO L175 Difference]: Start difference. First operand has 72 places, 74 transitions, 447 flow. Second operand 5 states and 121 transitions. [2024-06-04 15:19:12,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 91 transitions, 663 flow [2024-06-04 15:19:12,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 91 transitions, 576 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-04 15:19:12,551 INFO L231 Difference]: Finished difference. Result has 72 places, 74 transitions, 391 flow [2024-06-04 15:19:12,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=391, PETRI_PLACES=72, PETRI_TRANSITIONS=74} [2024-06-04 15:19:12,552 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 15 predicate places. [2024-06-04 15:19:12,552 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 74 transitions, 391 flow [2024-06-04 15:19:12,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:12,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:19:12,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:19:12,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-04 15:19:12,552 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 15:19:12,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:19:12,553 INFO L85 PathProgramCache]: Analyzing trace with hash -291011103, now seen corresponding path program 1 times [2024-06-04 15:19:12,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:19:12,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901619494] [2024-06-04 15:19:12,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:19:12,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:19:12,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:19:13,360 INFO 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 15:19:13,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:19:13,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901619494] [2024-06-04 15:19:13,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901619494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:19:13,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:19:13,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:19:13,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009570172] [2024-06-04 15:19:13,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:19:13,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:19:13,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:19:13,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:19:13,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:19:13,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-04 15:19:13,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 74 transitions, 391 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:13,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:19:13,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-04 15:19:13,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:19:15,573 INFO L124 PetriNetUnfolderBase]: 16197/22231 cut-off events. [2024-06-04 15:19:15,574 INFO L125 PetriNetUnfolderBase]: For 66250/66250 co-relation queries the response was YES. [2024-06-04 15:19:15,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75429 conditions, 22231 events. 16197/22231 cut-off events. For 66250/66250 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 120092 event pairs, 8267 based on Foata normal form. 10/22027 useless extension candidates. Maximal degree in co-relation 75403. Up to 21655 conditions per place. [2024-06-04 15:19:15,726 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 91 selfloop transitions, 22 changer transitions 0/118 dead transitions. [2024-06-04 15:19:15,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 118 transitions, 835 flow [2024-06-04 15:19:15,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:19:15,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:19:15,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2024-06-04 15:19:15,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-04 15:19:15,728 INFO L175 Difference]: Start difference. First operand has 72 places, 74 transitions, 391 flow. Second operand 6 states and 153 transitions. [2024-06-04 15:19:15,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 118 transitions, 835 flow [2024-06-04 15:19:15,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 118 transitions, 806 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-04 15:19:15,756 INFO L231 Difference]: Finished difference. Result has 76 places, 88 transitions, 548 flow [2024-06-04 15:19:15,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=548, PETRI_PLACES=76, PETRI_TRANSITIONS=88} [2024-06-04 15:19:15,758 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 19 predicate places. [2024-06-04 15:19:15,759 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 88 transitions, 548 flow [2024-06-04 15:19:15,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:15,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:19:15,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:19:15,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-04 15:19:15,759 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 15:19:15,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:19:15,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1462237932, now seen corresponding path program 1 times [2024-06-04 15:19:15,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:19:15,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868128835] [2024-06-04 15:19:15,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:19:15,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:19:15,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:19:16,659 INFO 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 15:19:16,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:19:16,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868128835] [2024-06-04 15:19:16,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868128835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:19:16,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:19:16,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:19:16,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959659434] [2024-06-04 15:19:16,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:19:16,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:19:16,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:19:16,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:19:16,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:19:16,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-04 15:19:16,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 88 transitions, 548 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:16,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:19:16,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-04 15:19:16,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:19:18,756 INFO L124 PetriNetUnfolderBase]: 16210/22255 cut-off events. [2024-06-04 15:19:18,756 INFO L125 PetriNetUnfolderBase]: For 93519/93529 co-relation queries the response was YES. [2024-06-04 15:19:18,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83386 conditions, 22255 events. 16210/22255 cut-off events. For 93519/93529 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 120401 event pairs, 8448 based on Foata normal form. 14/22056 useless extension candidates. Maximal degree in co-relation 83358. Up to 21667 conditions per place. [2024-06-04 15:19:18,918 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 92 selfloop transitions, 25 changer transitions 0/122 dead transitions. [2024-06-04 15:19:18,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 122 transitions, 931 flow [2024-06-04 15:19:18,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:19:18,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:19:18,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2024-06-04 15:19:18,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-04 15:19:18,920 INFO L175 Difference]: Start difference. First operand has 76 places, 88 transitions, 548 flow. Second operand 6 states and 153 transitions. [2024-06-04 15:19:18,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 122 transitions, 931 flow [2024-06-04 15:19:18,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 122 transitions, 903 flow, removed 13 selfloop flow, removed 1 redundant places. [2024-06-04 15:19:18,968 INFO L231 Difference]: Finished difference. Result has 81 places, 92 transitions, 616 flow [2024-06-04 15:19:18,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=616, PETRI_PLACES=81, PETRI_TRANSITIONS=92} [2024-06-04 15:19:18,969 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 24 predicate places. [2024-06-04 15:19:18,969 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 92 transitions, 616 flow [2024-06-04 15:19:18,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:18,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:19:18,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:19:18,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-04 15:19:18,970 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 15:19:18,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:19:18,970 INFO L85 PathProgramCache]: Analyzing trace with hash -397453962, now seen corresponding path program 2 times [2024-06-04 15:19:18,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:19:18,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956851165] [2024-06-04 15:19:18,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:19:18,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:19:18,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:19:19,689 INFO 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 15:19:19,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:19:19,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956851165] [2024-06-04 15:19:19,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956851165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:19:19,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:19:19,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:19:19,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122709324] [2024-06-04 15:19:19,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:19:19,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:19:19,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:19:19,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:19:19,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:19:19,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-04 15:19:19,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 92 transitions, 616 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:19,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:19:19,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-04 15:19:19,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:19:21,897 INFO L124 PetriNetUnfolderBase]: 16180/22208 cut-off events. [2024-06-04 15:19:21,897 INFO L125 PetriNetUnfolderBase]: For 103638/103638 co-relation queries the response was YES. [2024-06-04 15:19:21,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84143 conditions, 22208 events. 16180/22208 cut-off events. For 103638/103638 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 120072 event pairs, 8441 based on Foata normal form. 3/21999 useless extension candidates. Maximal degree in co-relation 84112. Up to 21723 conditions per place. [2024-06-04 15:19:22,035 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 97 selfloop transitions, 14 changer transitions 0/116 dead transitions. [2024-06-04 15:19:22,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 116 transitions, 900 flow [2024-06-04 15:19:22,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:19:22,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:19:22,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-04 15:19:22,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44135802469135804 [2024-06-04 15:19:22,038 INFO L175 Difference]: Start difference. First operand has 81 places, 92 transitions, 616 flow. Second operand 6 states and 143 transitions. [2024-06-04 15:19:22,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 116 transitions, 900 flow [2024-06-04 15:19:22,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 116 transitions, 857 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-04 15:19:22,087 INFO L231 Difference]: Finished difference. Result has 84 places, 92 transitions, 612 flow [2024-06-04 15:19:22,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=612, PETRI_PLACES=84, PETRI_TRANSITIONS=92} [2024-06-04 15:19:22,088 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 27 predicate places. [2024-06-04 15:19:22,088 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 92 transitions, 612 flow [2024-06-04 15:19:22,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:22,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:19:22,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:19:22,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-04 15:19:22,089 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 15:19:22,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:19:22,089 INFO L85 PathProgramCache]: Analyzing trace with hash 363462370, now seen corresponding path program 1 times [2024-06-04 15:19:22,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:19:22,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290895804] [2024-06-04 15:19:22,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:19:22,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:19:22,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:19:22,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:19:22,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:19:22,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290895804] [2024-06-04 15:19:22,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290895804] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:19:22,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:19:22,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:19:22,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470693472] [2024-06-04 15:19:22,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:19:22,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:19:22,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:19:22,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:19:22,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:19:23,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-04 15:19:23,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 92 transitions, 612 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:23,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:19:23,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-04 15:19:23,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:19:25,521 INFO L124 PetriNetUnfolderBase]: 16598/22725 cut-off events. [2024-06-04 15:19:25,521 INFO L125 PetriNetUnfolderBase]: For 122063/122065 co-relation queries the response was YES. [2024-06-04 15:19:25,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88054 conditions, 22725 events. 16598/22725 cut-off events. For 122063/122065 co-relation queries the response was YES. Maximal size of possible extension queue 687. Compared 122481 event pairs, 7396 based on Foata normal form. 22/22556 useless extension candidates. Maximal degree in co-relation 88022. Up to 21581 conditions per place. [2024-06-04 15:19:25,640 INFO L140 encePairwiseOnDemand]: 39/54 looper letters, 116 selfloop transitions, 43 changer transitions 0/164 dead transitions. [2024-06-04 15:19:25,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 164 transitions, 1374 flow [2024-06-04 15:19:25,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:19:25,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:19:25,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 190 transitions. [2024-06-04 15:19:25,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026455026455027 [2024-06-04 15:19:25,648 INFO L175 Difference]: Start difference. First operand has 84 places, 92 transitions, 612 flow. Second operand 7 states and 190 transitions. [2024-06-04 15:19:25,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 164 transitions, 1374 flow [2024-06-04 15:19:25,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 164 transitions, 1314 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-04 15:19:25,710 INFO L231 Difference]: Finished difference. Result has 88 places, 116 transitions, 906 flow [2024-06-04 15:19:25,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=906, PETRI_PLACES=88, PETRI_TRANSITIONS=116} [2024-06-04 15:19:25,710 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 31 predicate places. [2024-06-04 15:19:25,710 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 116 transitions, 906 flow [2024-06-04 15:19:25,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:25,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:19:25,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:19:25,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-04 15:19:25,711 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 15:19:25,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:19:25,712 INFO L85 PathProgramCache]: Analyzing trace with hash -2121835040, now seen corresponding path program 2 times [2024-06-04 15:19:25,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:19:25,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130727579] [2024-06-04 15:19:25,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:19:25,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:19:25,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:19:26,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:19:26,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:19:26,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130727579] [2024-06-04 15:19:26,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130727579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:19:26,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:19:26,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:19:26,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042811275] [2024-06-04 15:19:26,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:19:26,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:19:26,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:19:26,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:19:26,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:19:26,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-04 15:19:26,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 116 transitions, 906 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:26,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:19:26,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-04 15:19:26,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:19:29,118 INFO L124 PetriNetUnfolderBase]: 16684/22833 cut-off events. [2024-06-04 15:19:29,119 INFO L125 PetriNetUnfolderBase]: For 165989/165991 co-relation queries the response was YES. [2024-06-04 15:19:29,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100219 conditions, 22833 events. 16684/22833 cut-off events. For 165989/165991 co-relation queries the response was YES. Maximal size of possible extension queue 688. Compared 122985 event pairs, 7798 based on Foata normal form. 12/22648 useless extension candidates. Maximal degree in co-relation 100183. Up to 22163 conditions per place. [2024-06-04 15:19:29,314 INFO L140 encePairwiseOnDemand]: 40/54 looper letters, 132 selfloop transitions, 31 changer transitions 0/168 dead transitions. [2024-06-04 15:19:29,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 168 transitions, 1606 flow [2024-06-04 15:19:29,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:19:29,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:19:29,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-06-04 15:19:29,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-04 15:19:29,316 INFO L175 Difference]: Start difference. First operand has 88 places, 116 transitions, 906 flow. Second operand 7 states and 180 transitions. [2024-06-04 15:19:29,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 168 transitions, 1606 flow [2024-06-04 15:19:29,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 168 transitions, 1542 flow, removed 31 selfloop flow, removed 1 redundant places. [2024-06-04 15:19:29,442 INFO L231 Difference]: Finished difference. Result has 95 places, 126 transitions, 1051 flow [2024-06-04 15:19:29,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=854, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1051, PETRI_PLACES=95, PETRI_TRANSITIONS=126} [2024-06-04 15:19:29,443 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 38 predicate places. [2024-06-04 15:19:29,443 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 126 transitions, 1051 flow [2024-06-04 15:19:29,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:29,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:19:29,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:19:29,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-04 15:19:29,444 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 15:19:29,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:19:29,444 INFO L85 PathProgramCache]: Analyzing trace with hash 2139177026, now seen corresponding path program 3 times [2024-06-04 15:19:29,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:19:29,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450034053] [2024-06-04 15:19:29,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:19:29,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:19:29,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:19:30,329 INFO 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 15:19:30,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:19:30,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450034053] [2024-06-04 15:19:30,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450034053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:19:30,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:19:30,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:19:30,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835558452] [2024-06-04 15:19:30,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:19:30,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:19:30,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:19:30,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:19:30,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:19:30,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-04 15:19:30,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 126 transitions, 1051 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:30,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:19:30,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-04 15:19:30,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:19:33,326 INFO L124 PetriNetUnfolderBase]: 16708/22865 cut-off events. [2024-06-04 15:19:33,327 INFO L125 PetriNetUnfolderBase]: For 198122/198124 co-relation queries the response was YES. [2024-06-04 15:19:33,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104654 conditions, 22865 events. 16708/22865 cut-off events. For 198122/198124 co-relation queries the response was YES. Maximal size of possible extension queue 688. Compared 123122 event pairs, 7791 based on Foata normal form. 12/22680 useless extension candidates. Maximal degree in co-relation 104614. Up to 22324 conditions per place. [2024-06-04 15:19:33,681 INFO L140 encePairwiseOnDemand]: 40/54 looper letters, 137 selfloop transitions, 27 changer transitions 0/169 dead transitions. [2024-06-04 15:19:33,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 169 transitions, 1637 flow [2024-06-04 15:19:33,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:19:33,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:19:33,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-04 15:19:33,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-04 15:19:33,702 INFO L175 Difference]: Start difference. First operand has 95 places, 126 transitions, 1051 flow. Second operand 7 states and 175 transitions. [2024-06-04 15:19:33,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 169 transitions, 1637 flow [2024-06-04 15:19:33,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 169 transitions, 1571 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-06-04 15:19:33,862 INFO L231 Difference]: Finished difference. Result has 100 places, 133 transitions, 1148 flow [2024-06-04 15:19:33,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=988, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1148, PETRI_PLACES=100, PETRI_TRANSITIONS=133} [2024-06-04 15:19:33,864 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 43 predicate places. [2024-06-04 15:19:33,864 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 133 transitions, 1148 flow [2024-06-04 15:19:33,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:33,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:19:33,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:19:33,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-04 15:19:33,865 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 15:19:33,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:19:33,865 INFO L85 PathProgramCache]: Analyzing trace with hash -488736992, now seen corresponding path program 1 times [2024-06-04 15:19:33,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:19:33,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865632077] [2024-06-04 15:19:33,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:19:33,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:19:33,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:19:35,056 INFO 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 15:19:35,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:19:35,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865632077] [2024-06-04 15:19:35,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865632077] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:19:35,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:19:35,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:19:35,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760907063] [2024-06-04 15:19:35,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:19:35,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:19:35,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:19:35,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:19:35,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:19:35,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-04 15:19:35,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 133 transitions, 1148 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:35,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:19:35,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-04 15:19:35,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:19:38,738 INFO L124 PetriNetUnfolderBase]: 16728/22892 cut-off events. [2024-06-04 15:19:38,738 INFO L125 PetriNetUnfolderBase]: For 222606/222608 co-relation queries the response was YES. [2024-06-04 15:19:38,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107370 conditions, 22892 events. 16728/22892 cut-off events. For 222606/222608 co-relation queries the response was YES. Maximal size of possible extension queue 688. Compared 123161 event pairs, 7600 based on Foata normal form. 12/22707 useless extension candidates. Maximal degree in co-relation 107328. Up to 22308 conditions per place. [2024-06-04 15:19:38,891 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 135 selfloop transitions, 33 changer transitions 0/173 dead transitions. [2024-06-04 15:19:38,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 173 transitions, 1718 flow [2024-06-04 15:19:38,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:19:38,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:19:38,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-04 15:19:38,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4656084656084656 [2024-06-04 15:19:38,893 INFO L175 Difference]: Start difference. First operand has 100 places, 133 transitions, 1148 flow. Second operand 7 states and 176 transitions. [2024-06-04 15:19:38,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 173 transitions, 1718 flow [2024-06-04 15:19:39,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 173 transitions, 1644 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-04 15:19:39,011 INFO L231 Difference]: Finished difference. Result has 103 places, 137 transitions, 1207 flow [2024-06-04 15:19:39,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1074, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1207, PETRI_PLACES=103, PETRI_TRANSITIONS=137} [2024-06-04 15:19:39,012 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 46 predicate places. [2024-06-04 15:19:39,012 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 137 transitions, 1207 flow [2024-06-04 15:19:39,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:39,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:19:39,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:19:39,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-04 15:19:39,013 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:19:39,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:19:39,014 INFO L85 PathProgramCache]: Analyzing trace with hash 880182765, now seen corresponding path program 1 times [2024-06-04 15:19:39,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:19:39,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060361190] [2024-06-04 15:19:39,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:19:39,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:19:39,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:19:39,674 INFO 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 15:19:39,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:19:39,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060361190] [2024-06-04 15:19:39,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060361190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:19:39,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:19:39,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 15:19:39,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756290859] [2024-06-04 15:19:39,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:19:39,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 15:19:39,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:19:39,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 15:19:39,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-04 15:19:39,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-04 15:19:39,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 137 transitions, 1207 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:39,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:19:39,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-04 15:19:39,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:19:42,568 INFO L124 PetriNetUnfolderBase]: 16721/22880 cut-off events. [2024-06-04 15:19:42,568 INFO L125 PetriNetUnfolderBase]: For 251127/251127 co-relation queries the response was YES. [2024-06-04 15:19:42,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111963 conditions, 22880 events. 16721/22880 cut-off events. For 251127/251127 co-relation queries the response was YES. Maximal size of possible extension queue 688. Compared 123192 event pairs, 7783 based on Foata normal form. 2/22682 useless extension candidates. Maximal degree in co-relation 111920. Up to 22467 conditions per place. [2024-06-04 15:19:42,717 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 136 selfloop transitions, 10 changer transitions 0/151 dead transitions. [2024-06-04 15:19:42,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 151 transitions, 1535 flow [2024-06-04 15:19:42,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 15:19:42,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 15:19:42,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-06-04 15:19:42,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-04 15:19:42,877 INFO L175 Difference]: Start difference. First operand has 103 places, 137 transitions, 1207 flow. Second operand 5 states and 117 transitions. [2024-06-04 15:19:42,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 151 transitions, 1535 flow [2024-06-04 15:19:43,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 151 transitions, 1420 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-04 15:19:43,020 INFO L231 Difference]: Finished difference. Result has 103 places, 137 transitions, 1121 flow [2024-06-04 15:19:43,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1092, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1121, PETRI_PLACES=103, PETRI_TRANSITIONS=137} [2024-06-04 15:19:43,020 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 46 predicate places. [2024-06-04 15:19:43,021 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 137 transitions, 1121 flow [2024-06-04 15:19:43,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:43,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:19:43,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:19:43,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-04 15:19:43,021 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:19:43,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:19:43,023 INFO L85 PathProgramCache]: Analyzing trace with hash -760104333, now seen corresponding path program 1 times [2024-06-04 15:19:43,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:19:43,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808070411] [2024-06-04 15:19:43,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:19:43,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:19:43,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:19:44,217 INFO 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 15:19:44,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:19:44,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808070411] [2024-06-04 15:19:44,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808070411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:19:44,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:19:44,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:19:44,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950594241] [2024-06-04 15:19:44,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:19:44,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:19:44,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:19:44,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:19:44,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:19:44,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-04 15:19:44,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 137 transitions, 1121 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:44,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:19:44,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-04 15:19:44,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:19:47,379 INFO L124 PetriNetUnfolderBase]: 16743/22902 cut-off events. [2024-06-04 15:19:47,380 INFO L125 PetriNetUnfolderBase]: For 273888/273901 co-relation queries the response was YES. [2024-06-04 15:19:47,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113395 conditions, 22902 events. 16743/22902 cut-off events. For 273888/273901 co-relation queries the response was YES. Maximal size of possible extension queue 686. Compared 123277 event pairs, 7626 based on Foata normal form. 13/22719 useless extension candidates. Maximal degree in co-relation 113351. Up to 22312 conditions per place. [2024-06-04 15:19:47,541 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 145 selfloop transitions, 35 changer transitions 0/185 dead transitions. [2024-06-04 15:19:47,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 185 transitions, 1781 flow [2024-06-04 15:19:47,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:19:47,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:19:47,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-04 15:19:47,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4708994708994709 [2024-06-04 15:19:47,543 INFO L175 Difference]: Start difference. First operand has 103 places, 137 transitions, 1121 flow. Second operand 7 states and 178 transitions. [2024-06-04 15:19:47,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 185 transitions, 1781 flow [2024-06-04 15:19:47,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 185 transitions, 1748 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-04 15:19:47,658 INFO L231 Difference]: Finished difference. Result has 106 places, 145 transitions, 1293 flow [2024-06-04 15:19:47,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1088, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1293, PETRI_PLACES=106, PETRI_TRANSITIONS=145} [2024-06-04 15:19:47,659 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 49 predicate places. [2024-06-04 15:19:47,659 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 145 transitions, 1293 flow [2024-06-04 15:19:47,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:47,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:19:47,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:19:47,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-04 15:19:47,660 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 15:19:47,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:19:47,660 INFO L85 PathProgramCache]: Analyzing trace with hash -756439203, now seen corresponding path program 2 times [2024-06-04 15:19:47,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:19:47,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418450252] [2024-06-04 15:19:47,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:19:47,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:19:47,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:19:48,860 INFO 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 15:19:48,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:19:48,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418450252] [2024-06-04 15:19:48,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418450252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:19:48,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:19:48,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:19:48,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212586997] [2024-06-04 15:19:48,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:19:48,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:19:48,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:19:48,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:19:48,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:19:48,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-04 15:19:48,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 145 transitions, 1293 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:48,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:19:48,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-04 15:19:48,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand