./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 cde23df1 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-cde23df-m [2024-06-14 12:32:56,587 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 12:32:56,637 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 12:32:56,647 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 12:32:56,647 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 12:32:56,661 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 12:32:56,661 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 12:32:56,662 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 12:32:56,662 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 12:32:56,662 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 12:32:56,663 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 12:32:56,663 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 12:32:56,663 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 12:32:56,664 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 12:32:56,664 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 12:32:56,664 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 12:32:56,664 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 12:32:56,665 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 12:32:56,665 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 12:32:56,665 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 12:32:56,665 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 12:32:56,666 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 12:32:56,666 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 12:32:56,666 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 12:32:56,667 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 12:32:56,667 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 12:32:56,667 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 12:32:56,667 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 12:32:56,668 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 12:32:56,668 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 12:32:56,668 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 12:32:56,669 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 12:32:56,669 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 12:32:56,669 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 12:32:56,669 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 12:32:56,670 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 12:32:56,670 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 12:32:56,670 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 12:32:56,671 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 12:32:56,671 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 12:32:56,671 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 12:32:56,671 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 12:32:56,672 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 12:32:56,672 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 12:32:56,864 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 12:32:56,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 12:32:56,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 12:32:56,885 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 12:32:56,886 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 12:32:56,887 INFO L431 ainManager$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 [2024-06-14 12:32:57,042 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 12:32:57,042 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 12:32:57,043 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix047_power.oepc_pso.oepc_rmo.oepc.i [2024-06-14 12:32:58,083 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 12:32:58,326 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 12:32:58,327 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix047_power.oepc_pso.oepc_rmo.oepc.i [2024-06-14 12:32:58,337 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/194ede70f/fd79813948344ca78243e78e10a4ae16/FLAG350e039e9 [2024-06-14 12:32:58,346 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/194ede70f/fd79813948344ca78243e78e10a4ae16 [2024-06-14 12:32:58,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 12:32:58,347 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 12:32:58,348 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 12:32:58,348 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 12:32:58,356 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 12:32:58,356 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 12:32:57" (1/2) ... [2024-06-14 12:32:58,357 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18a75dbf and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:32:58, skipping insertion in model container [2024-06-14 12:32:58,357 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 12:32:57" (1/2) ... [2024-06-14 12:32:58,358 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@313abeae and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:32:58, skipping insertion in model container [2024-06-14 12:32:58,358 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 12:32:58" (2/2) ... [2024-06-14 12:32:58,358 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18a75dbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:32:58, skipping insertion in model container [2024-06-14 12:32:58,360 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 12:32:58" (2/2) ... [2024-06-14 12:32:58,360 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 12:32:58,457 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 12:32:58,457 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$r_buff0_thd3 == (_Bool)0) [2024-06-14 12:32:58,458 INFO L97 edCorrectnessWitness]: Location invariant before [L874-L874] (((((((((((((((((((((! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2))) && (! multithreaded || ((0 <= b$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) [2024-06-14 12:32:58,458 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$r_buff0_thd3 == (_Bool)0) [2024-06-14 12:32:58,458 INFO L97 edCorrectnessWitness]: Location invariant before [L875-L875] (((((((((((((((((((((! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2))) && (! multithreaded || ((0 <= b$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) [2024-06-14 12:32:58,458 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 12:32:58,458 INFO L106 edCorrectnessWitness]: ghost_update [L868-L868] multithreaded = 1; [2024-06-14 12:32:58,496 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 12:32:58,857 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 12:32:58,867 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-14 12:32:59,015 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 12:32:59,049 INFO L206 MainTranslator]: Completed translation [2024-06-14 12:32:59,050 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:32:59 WrapperNode [2024-06-14 12:32:59,050 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 12:32:59,051 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 12:32:59,051 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 12:32:59,051 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 12:32:59,056 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:32:59" (1/1) ... [2024-06-14 12:32:59,080 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:32:59" (1/1) ... [2024-06-14 12:32:59,107 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 138 [2024-06-14 12:32:59,107 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 12:32:59,108 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 12:32:59,108 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 12:32:59,111 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 12:32:59,121 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:32:59" (1/1) ... [2024-06-14 12:32:59,122 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:32:59" (1/1) ... [2024-06-14 12:32:59,125 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:32:59" (1/1) ... [2024-06-14 12:32:59,137 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]. [2024-06-14 12:32:59,137 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:32:59" (1/1) ... [2024-06-14 12:32:59,137 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:32:59" (1/1) ... [2024-06-14 12:32:59,145 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:32:59" (1/1) ... [2024-06-14 12:32:59,147 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:32:59" (1/1) ... [2024-06-14 12:32:59,149 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:32:59" (1/1) ... [2024-06-14 12:32:59,156 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:32:59" (1/1) ... [2024-06-14 12:32:59,159 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 12:32:59,159 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 12:32:59,159 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 12:32:59,159 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 12:32:59,161 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:32:59" (1/1) ... [2024-06-14 12:32:59,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 12:32:59,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 12:32:59,201 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) [2024-06-14 12:32:59,228 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 [2024-06-14 12:32:59,236 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-14 12:32:59,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 12:32:59,236 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-14 12:32:59,236 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-14 12:32:59,236 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-14 12:32:59,236 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-14 12:32:59,237 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-14 12:32:59,237 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-14 12:32:59,237 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-14 12:32:59,237 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-14 12:32:59,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 12:32:59,238 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-14 12:32:59,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 12:32:59,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 12:32:59,239 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-14 12:32:59,360 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 12:32:59,362 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 12:32:59,679 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 12:32:59,680 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 12:32:59,803 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 12:32:59,803 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-14 12:32:59,804 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 12:32:59 BoogieIcfgContainer [2024-06-14 12:32:59,804 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 12:32:59,805 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 12:32:59,805 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 12:32:59,808 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 12:32:59,808 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 12:32:57" (1/4) ... [2024-06-14 12:32:59,809 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a1de826 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 12:32:59, skipping insertion in model container [2024-06-14 12:32:59,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 12:32:58" (2/4) ... [2024-06-14 12:32:59,809 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a1de826 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 12:32:59, skipping insertion in model container [2024-06-14 12:32:59,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:32:59" (3/4) ... [2024-06-14 12:32:59,809 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a1de826 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 12:32:59, skipping insertion in model container [2024-06-14 12:32:59,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 12:32:59" (4/4) ... [2024-06-14 12:32:59,810 INFO L112 eAbstractionObserver]: Analyzing ICFG mix047_power.oepc_pso.oepc_rmo.oepc.i [2024-06-14 12:32:59,824 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 12:32:59,825 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-14 12:32:59,825 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 12:32:59,868 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-14 12:32:59,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 67 places, 54 transitions, 124 flow [2024-06-14 12:32:59,916 INFO L124 PetriNetUnfolderBase]: 0/50 cut-off events. [2024-06-14 12:32:59,916 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 12:32:59,919 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. [2024-06-14 12:32:59,919 INFO L82 GeneralOperation]: Start removeDead. Operand has 67 places, 54 transitions, 124 flow [2024-06-14 12:32:59,921 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 44 transitions, 100 flow [2024-06-14 12:32:59,928 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 12:32:59,932 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;@3fc14bf3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 12:32:59,932 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-14 12:32:59,936 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 12:32:59,936 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-06-14 12:32:59,936 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 12:32:59,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:32:59,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-14 12:32:59,937 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)] === [2024-06-14 12:32:59,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:32:59,941 INFO L85 PathProgramCache]: Analyzing trace with hash -227066049, now seen corresponding path program 1 times [2024-06-14 12:32:59,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:32:59,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316595030] [2024-06-14 12:32:59,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:32:59,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:33:00,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:33:00,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:33:00,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:33:00,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316595030] [2024-06-14 12:33:00,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316595030] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:33:00,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:33:00,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-14 12:33:00,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275087213] [2024-06-14 12:33:00,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:33:00,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 12:33:00,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:33:00,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 12:33:00,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 12:33:00,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-14 12:33:00,918 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) [2024-06-14 12:33:00,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:33:00,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-14 12:33:00,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:33:03,195 INFO L124 PetriNetUnfolderBase]: 16127/22058 cut-off events. [2024-06-14 12:33:03,195 INFO L125 PetriNetUnfolderBase]: For 255/255 co-relation queries the response was YES. [2024-06-14 12:33:03,233 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. [2024-06-14 12:33:03,329 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 48 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2024-06-14 12:33:03,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 58 transitions, 243 flow [2024-06-14 12:33:03,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 12:33:03,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 12:33:03,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2024-06-14 12:33:03,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5740740740740741 [2024-06-14 12:33:03,340 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 100 flow. Second operand 3 states and 93 transitions. [2024-06-14 12:33:03,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 58 transitions, 243 flow [2024-06-14 12:33:03,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 58 transitions, 236 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-14 12:33:03,344 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 135 flow [2024-06-14 12:33:03,345 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} [2024-06-14 12:33:03,348 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -1 predicate places. [2024-06-14 12:33:03,348 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 135 flow [2024-06-14 12:33:03,348 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) [2024-06-14 12:33:03,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:33:03,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:33:03,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 12:33:03,349 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)] === [2024-06-14 12:33:03,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:33:03,350 INFO L85 PathProgramCache]: Analyzing trace with hash 832910750, now seen corresponding path program 1 times [2024-06-14 12:33:03,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:33:03,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174181290] [2024-06-14 12:33:03,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:33:03,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:33:03,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:33:04,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:33:04,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:33:04,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174181290] [2024-06-14 12:33:04,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174181290] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:33:04,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:33:04,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-14 12:33:04,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804362152] [2024-06-14 12:33:04,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:33:04,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-14 12:33:04,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:33:04,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-14 12:33:04,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-14 12:33:04,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-14 12:33:04,080 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) [2024-06-14 12:33:04,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:33:04,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-14 12:33:04,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:33:06,224 INFO L124 PetriNetUnfolderBase]: 16117/22044 cut-off events. [2024-06-14 12:33:06,224 INFO L125 PetriNetUnfolderBase]: For 3802/3802 co-relation queries the response was YES. [2024-06-14 12:33:06,266 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. [2024-06-14 12:33:06,462 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 58 selfloop transitions, 9 changer transitions 0/72 dead transitions. [2024-06-14 12:33:06,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 72 transitions, 335 flow [2024-06-14 12:33:06,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 12:33:06,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 12:33:06,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2024-06-14 12:33:06,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5509259259259259 [2024-06-14 12:33:06,466 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 135 flow. Second operand 4 states and 119 transitions. [2024-06-14 12:33:06,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 72 transitions, 335 flow [2024-06-14 12:33:06,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 72 transitions, 330 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 12:33:06,469 INFO L231 Difference]: Finished difference. Result has 59 places, 52 transitions, 183 flow [2024-06-14 12:33:06,470 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} [2024-06-14 12:33:06,470 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 2 predicate places. [2024-06-14 12:33:06,471 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 52 transitions, 183 flow [2024-06-14 12:33:06,473 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) [2024-06-14 12:33:06,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:33:06,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:33:06,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 12:33:06,474 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)] === [2024-06-14 12:33:06,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:33:06,480 INFO L85 PathProgramCache]: Analyzing trace with hash 50431152, now seen corresponding path program 1 times [2024-06-14 12:33:06,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:33:06,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141805773] [2024-06-14 12:33:06,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:33:06,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:33:06,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:33:07,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:33:07,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:33:07,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141805773] [2024-06-14 12:33:07,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141805773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:33:07,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:33:07,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 12:33:07,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927743416] [2024-06-14 12:33:07,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:33:07,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 12:33:07,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:33:07,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 12:33:07,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-14 12:33:07,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-14 12:33:07,247 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) [2024-06-14 12:33:07,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:33:07,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-14 12:33:07,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:33:09,348 INFO L124 PetriNetUnfolderBase]: 16135/22096 cut-off events. [2024-06-14 12:33:09,348 INFO L125 PetriNetUnfolderBase]: For 10985/10985 co-relation queries the response was YES. [2024-06-14 12:33:09,382 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. [2024-06-14 12:33:09,446 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 76 selfloop transitions, 21 changer transitions 0/102 dead transitions. [2024-06-14 12:33:09,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 102 transitions, 551 flow [2024-06-14 12:33:09,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 12:33:09,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 12:33:09,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 155 transitions. [2024-06-14 12:33:09,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5740740740740741 [2024-06-14 12:33:09,448 INFO L175 Difference]: Start difference. First operand has 59 places, 52 transitions, 183 flow. Second operand 5 states and 155 transitions. [2024-06-14 12:33:09,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 102 transitions, 551 flow [2024-06-14 12:33:09,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 102 transitions, 532 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-14 12:33:09,453 INFO L231 Difference]: Finished difference. Result has 64 places, 66 transitions, 314 flow [2024-06-14 12:33:09,453 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} [2024-06-14 12:33:09,454 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 7 predicate places. [2024-06-14 12:33:09,454 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 66 transitions, 314 flow [2024-06-14 12:33:09,455 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) [2024-06-14 12:33:09,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:33:09,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:33:09,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 12:33:09,455 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)] === [2024-06-14 12:33:09,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:33:09,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1563367421, now seen corresponding path program 1 times [2024-06-14 12:33:09,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:33:09,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160365828] [2024-06-14 12:33:09,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:33:09,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:33:09,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:33:10,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:33:10,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:33:10,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160365828] [2024-06-14 12:33:10,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160365828] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:33:10,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:33:10,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 12:33:10,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710877890] [2024-06-14 12:33:10,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:33:10,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 12:33:10,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:33:10,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 12:33:10,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-14 12:33:10,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-14 12:33:10,466 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) [2024-06-14 12:33:10,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:33:10,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-14 12:33:10,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:33:12,869 INFO L124 PetriNetUnfolderBase]: 16153/22121 cut-off events. [2024-06-14 12:33:12,870 INFO L125 PetriNetUnfolderBase]: For 25906/25911 co-relation queries the response was YES. [2024-06-14 12:33:12,910 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. [2024-06-14 12:33:12,974 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 86 selfloop transitions, 26 changer transitions 0/117 dead transitions. [2024-06-14 12:33:12,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 117 transitions, 720 flow [2024-06-14 12:33:12,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:33:12,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:33:12,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 182 transitions. [2024-06-14 12:33:12,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5617283950617284 [2024-06-14 12:33:12,976 INFO L175 Difference]: Start difference. First operand has 64 places, 66 transitions, 314 flow. Second operand 6 states and 182 transitions. [2024-06-14 12:33:12,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 117 transitions, 720 flow [2024-06-14 12:33:12,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 117 transitions, 708 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-14 12:33:12,984 INFO L231 Difference]: Finished difference. Result has 70 places, 71 transitions, 408 flow [2024-06-14 12:33:12,985 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} [2024-06-14 12:33:12,985 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 13 predicate places. [2024-06-14 12:33:12,985 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 71 transitions, 408 flow [2024-06-14 12:33:12,985 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) [2024-06-14 12:33:12,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:33:12,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:33:12,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-14 12:33:12,986 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)] === [2024-06-14 12:33:12,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:33:12,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1219751535, now seen corresponding path program 1 times [2024-06-14 12:33:12,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:33:12,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105036404] [2024-06-14 12:33:12,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:33:12,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:33:13,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:33:13,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:33:13,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:33:13,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105036404] [2024-06-14 12:33:13,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105036404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:33:13,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:33:13,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:33:13,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867432074] [2024-06-14 12:33:13,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:33:13,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:33:13,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:33:13,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:33:13,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:33:14,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-14 12:33:14,036 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) [2024-06-14 12:33:14,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:33:14,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-14 12:33:14,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:33:16,090 INFO L124 PetriNetUnfolderBase]: 16182/22164 cut-off events. [2024-06-14 12:33:16,090 INFO L125 PetriNetUnfolderBase]: For 40951/40956 co-relation queries the response was YES. [2024-06-14 12:33:16,164 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. [2024-06-14 12:33:16,248 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 93 selfloop transitions, 30 changer transitions 0/128 dead transitions. [2024-06-14 12:33:16,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 128 transitions, 864 flow [2024-06-14 12:33:16,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:33:16,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:33:16,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 205 transitions. [2024-06-14 12:33:16,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5423280423280423 [2024-06-14 12:33:16,250 INFO L175 Difference]: Start difference. First operand has 70 places, 71 transitions, 408 flow. Second operand 7 states and 205 transitions. [2024-06-14 12:33:16,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 128 transitions, 864 flow [2024-06-14 12:33:16,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 128 transitions, 798 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-14 12:33:16,262 INFO L231 Difference]: Finished difference. Result has 72 places, 74 transitions, 447 flow [2024-06-14 12:33:16,263 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} [2024-06-14 12:33:16,263 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 15 predicate places. [2024-06-14 12:33:16,263 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 74 transitions, 447 flow [2024-06-14 12:33:16,264 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) [2024-06-14 12:33:16,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:33:16,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:33:16,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-14 12:33:16,264 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)] === [2024-06-14 12:33:16,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:33:16,265 INFO L85 PathProgramCache]: Analyzing trace with hash 129195159, now seen corresponding path program 1 times [2024-06-14 12:33:16,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:33:16,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321128050] [2024-06-14 12:33:16,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:33:16,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:33:16,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:33:16,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:33:16,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:33:16,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321128050] [2024-06-14 12:33:16,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321128050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:33:16,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:33:16,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 12:33:16,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809417059] [2024-06-14 12:33:16,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:33:16,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 12:33:16,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:33:16,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 12:33:16,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-14 12:33:16,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-14 12:33:16,992 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) [2024-06-14 12:33:16,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:33:16,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-14 12:33:16,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:33:19,027 INFO L124 PetriNetUnfolderBase]: 16173/22135 cut-off events. [2024-06-14 12:33:19,028 INFO L125 PetriNetUnfolderBase]: For 57966/57966 co-relation queries the response was YES. [2024-06-14 12:33:19,101 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. [2024-06-14 12:33:19,195 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 76 selfloop transitions, 10 changer transitions 0/91 dead transitions. [2024-06-14 12:33:19,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 91 transitions, 663 flow [2024-06-14 12:33:19,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 12:33:19,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 12:33:19,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-06-14 12:33:19,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44814814814814813 [2024-06-14 12:33:19,197 INFO L175 Difference]: Start difference. First operand has 72 places, 74 transitions, 447 flow. Second operand 5 states and 121 transitions. [2024-06-14 12:33:19,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 91 transitions, 663 flow [2024-06-14 12:33:19,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 91 transitions, 576 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-14 12:33:19,215 INFO L231 Difference]: Finished difference. Result has 72 places, 74 transitions, 391 flow [2024-06-14 12:33:19,215 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} [2024-06-14 12:33:19,216 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 15 predicate places. [2024-06-14 12:33:19,216 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 74 transitions, 391 flow [2024-06-14 12:33:19,216 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) [2024-06-14 12:33:19,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:33:19,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:33:19,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-14 12:33:19,217 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)] === [2024-06-14 12:33:19,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:33:19,217 INFO L85 PathProgramCache]: Analyzing trace with hash -291011103, now seen corresponding path program 1 times [2024-06-14 12:33:19,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:33:19,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687933793] [2024-06-14 12:33:19,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:33:19,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:33:19,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:33:20,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:33:20,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:33:20,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687933793] [2024-06-14 12:33:20,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687933793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:33:20,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:33:20,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:33:20,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469305669] [2024-06-14 12:33:20,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:33:20,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:33:20,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:33:20,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:33:20,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:33:20,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-14 12:33:20,203 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) [2024-06-14 12:33:20,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:33:20,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-14 12:33:20,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:33:22,470 INFO L124 PetriNetUnfolderBase]: 16197/22231 cut-off events. [2024-06-14 12:33:22,470 INFO L125 PetriNetUnfolderBase]: For 66250/66250 co-relation queries the response was YES. [2024-06-14 12:33:22,531 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. [2024-06-14 12:33:22,610 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 91 selfloop transitions, 22 changer transitions 0/118 dead transitions. [2024-06-14 12:33:22,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 118 transitions, 835 flow [2024-06-14 12:33:22,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:33:22,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:33:22,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2024-06-14 12:33:22,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-14 12:33:22,612 INFO L175 Difference]: Start difference. First operand has 72 places, 74 transitions, 391 flow. Second operand 6 states and 153 transitions. [2024-06-14 12:33:22,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 118 transitions, 835 flow [2024-06-14 12:33:22,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 118 transitions, 806 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-14 12:33:22,631 INFO L231 Difference]: Finished difference. Result has 76 places, 88 transitions, 548 flow [2024-06-14 12:33:22,631 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} [2024-06-14 12:33:22,631 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 19 predicate places. [2024-06-14 12:33:22,631 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 88 transitions, 548 flow [2024-06-14 12:33:22,632 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) [2024-06-14 12:33:22,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:33:22,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:33:22,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-14 12:33:22,632 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)] === [2024-06-14 12:33:22,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:33:22,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1462237932, now seen corresponding path program 1 times [2024-06-14 12:33:22,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:33:22,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495285316] [2024-06-14 12:33:22,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:33:22,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:33:22,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:33:23,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:33:23,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:33:23,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495285316] [2024-06-14 12:33:23,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495285316] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:33:23,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:33:23,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:33:23,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442064828] [2024-06-14 12:33:23,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:33:23,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:33:23,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:33:23,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:33:23,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:33:23,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-14 12:33:23,562 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) [2024-06-14 12:33:23,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:33:23,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-14 12:33:23,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:33:25,783 INFO L124 PetriNetUnfolderBase]: 16210/22255 cut-off events. [2024-06-14 12:33:25,784 INFO L125 PetriNetUnfolderBase]: For 93519/93529 co-relation queries the response was YES. [2024-06-14 12:33:25,854 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. [2024-06-14 12:33:25,933 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 92 selfloop transitions, 25 changer transitions 0/122 dead transitions. [2024-06-14 12:33:25,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 122 transitions, 931 flow [2024-06-14 12:33:25,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:33:25,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:33:25,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2024-06-14 12:33:25,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-14 12:33:25,935 INFO L175 Difference]: Start difference. First operand has 76 places, 88 transitions, 548 flow. Second operand 6 states and 153 transitions. [2024-06-14 12:33:25,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 122 transitions, 931 flow [2024-06-14 12:33:25,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 122 transitions, 903 flow, removed 13 selfloop flow, removed 1 redundant places. [2024-06-14 12:33:25,972 INFO L231 Difference]: Finished difference. Result has 81 places, 92 transitions, 616 flow [2024-06-14 12:33:25,972 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} [2024-06-14 12:33:25,973 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 24 predicate places. [2024-06-14 12:33:25,973 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 92 transitions, 616 flow [2024-06-14 12:33:25,973 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) [2024-06-14 12:33:25,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:33:25,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:33:25,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-14 12:33:25,974 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)] === [2024-06-14 12:33:25,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:33:25,975 INFO L85 PathProgramCache]: Analyzing trace with hash -397453962, now seen corresponding path program 2 times [2024-06-14 12:33:25,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:33:25,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390286585] [2024-06-14 12:33:25,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:33:25,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:33:25,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:33:26,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:33:26,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:33:26,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390286585] [2024-06-14 12:33:26,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390286585] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:33:26,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:33:26,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:33:26,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643215067] [2024-06-14 12:33:26,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:33:26,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:33:26,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:33:26,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:33:26,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:33:26,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-14 12:33:26,930 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) [2024-06-14 12:33:26,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:33:26,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-14 12:33:26,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:33:28,904 INFO L124 PetriNetUnfolderBase]: 16180/22208 cut-off events. [2024-06-14 12:33:28,904 INFO L125 PetriNetUnfolderBase]: For 103638/103638 co-relation queries the response was YES. [2024-06-14 12:33:28,978 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. [2024-06-14 12:33:29,063 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 97 selfloop transitions, 14 changer transitions 0/116 dead transitions. [2024-06-14 12:33:29,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 116 transitions, 900 flow [2024-06-14 12:33:29,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:33:29,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:33:29,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-14 12:33:29,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44135802469135804 [2024-06-14 12:33:29,065 INFO L175 Difference]: Start difference. First operand has 81 places, 92 transitions, 616 flow. Second operand 6 states and 143 transitions. [2024-06-14 12:33:29,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 116 transitions, 900 flow [2024-06-14 12:33:29,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 116 transitions, 857 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-14 12:33:29,115 INFO L231 Difference]: Finished difference. Result has 84 places, 92 transitions, 612 flow [2024-06-14 12:33:29,115 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} [2024-06-14 12:33:29,116 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 27 predicate places. [2024-06-14 12:33:29,116 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 92 transitions, 612 flow [2024-06-14 12:33:29,116 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) [2024-06-14 12:33:29,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:33:29,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:33:29,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-14 12:33:29,116 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)] === [2024-06-14 12:33:29,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:33:29,117 INFO L85 PathProgramCache]: Analyzing trace with hash 363462370, now seen corresponding path program 1 times [2024-06-14 12:33:29,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:33:29,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161977397] [2024-06-14 12:33:29,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:33:29,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:33:29,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:33:29,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:33:29,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:33:29,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161977397] [2024-06-14 12:33:29,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161977397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:33:29,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:33:29,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:33:29,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141329592] [2024-06-14 12:33:29,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:33:29,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:33:29,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:33:29,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:33:29,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:33:30,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-14 12:33:30,082 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) [2024-06-14 12:33:30,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:33:30,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-14 12:33:30,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:33:32,116 INFO L124 PetriNetUnfolderBase]: 16598/22725 cut-off events. [2024-06-14 12:33:32,116 INFO L125 PetriNetUnfolderBase]: For 122063/122065 co-relation queries the response was YES. [2024-06-14 12:33:32,187 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. [2024-06-14 12:33:32,270 INFO L140 encePairwiseOnDemand]: 39/54 looper letters, 116 selfloop transitions, 43 changer transitions 0/164 dead transitions. [2024-06-14 12:33:32,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 164 transitions, 1374 flow [2024-06-14 12:33:32,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:33:32,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:33:32,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 190 transitions. [2024-06-14 12:33:32,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026455026455027 [2024-06-14 12:33:32,271 INFO L175 Difference]: Start difference. First operand has 84 places, 92 transitions, 612 flow. Second operand 7 states and 190 transitions. [2024-06-14 12:33:32,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 164 transitions, 1374 flow [2024-06-14 12:33:32,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 164 transitions, 1314 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-14 12:33:32,327 INFO L231 Difference]: Finished difference. Result has 88 places, 116 transitions, 906 flow [2024-06-14 12:33:32,327 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} [2024-06-14 12:33:32,328 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 31 predicate places. [2024-06-14 12:33:32,328 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 116 transitions, 906 flow [2024-06-14 12:33:32,329 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) [2024-06-14 12:33:32,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:33:32,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:33:32,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-14 12:33:32,329 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)] === [2024-06-14 12:33:32,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:33:32,330 INFO L85 PathProgramCache]: Analyzing trace with hash -2121835040, now seen corresponding path program 2 times [2024-06-14 12:33:32,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:33:32,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514200744] [2024-06-14 12:33:32,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:33:32,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:33:32,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:33:33,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:33:33,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:33:33,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514200744] [2024-06-14 12:33:33,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514200744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:33:33,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:33:33,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:33:33,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754611002] [2024-06-14 12:33:33,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:33:33,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:33:33,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:33:33,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:33:33,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:33:33,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-14 12:33:33,184 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) [2024-06-14 12:33:33,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:33:33,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-14 12:33:33,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:33:35,469 INFO L124 PetriNetUnfolderBase]: 16684/22833 cut-off events. [2024-06-14 12:33:35,470 INFO L125 PetriNetUnfolderBase]: For 165989/165991 co-relation queries the response was YES. [2024-06-14 12:33:35,544 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. [2024-06-14 12:33:35,633 INFO L140 encePairwiseOnDemand]: 40/54 looper letters, 132 selfloop transitions, 31 changer transitions 0/168 dead transitions. [2024-06-14 12:33:35,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 168 transitions, 1606 flow [2024-06-14 12:33:35,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:33:35,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:33:35,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-06-14 12:33:35,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-14 12:33:35,635 INFO L175 Difference]: Start difference. First operand has 88 places, 116 transitions, 906 flow. Second operand 7 states and 180 transitions. [2024-06-14 12:33:35,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 168 transitions, 1606 flow [2024-06-14 12:33:35,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 168 transitions, 1542 flow, removed 31 selfloop flow, removed 1 redundant places. [2024-06-14 12:33:35,736 INFO L231 Difference]: Finished difference. Result has 95 places, 126 transitions, 1051 flow [2024-06-14 12:33:35,737 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} [2024-06-14 12:33:35,737 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 38 predicate places. [2024-06-14 12:33:35,737 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 126 transitions, 1051 flow [2024-06-14 12:33:35,737 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) [2024-06-14 12:33:35,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:33:35,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:33:35,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-14 12:33:35,738 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)] === [2024-06-14 12:33:35,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:33:35,738 INFO L85 PathProgramCache]: Analyzing trace with hash 2139177026, now seen corresponding path program 3 times [2024-06-14 12:33:35,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:33:35,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500806793] [2024-06-14 12:33:35,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:33:35,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:33:35,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:33:36,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:33:36,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:33:36,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500806793] [2024-06-14 12:33:36,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500806793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:33:36,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:33:36,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:33:36,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247906909] [2024-06-14 12:33:36,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:33:36,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:33:36,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:33:36,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:33:36,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:33:36,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-14 12:33:36,539 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) [2024-06-14 12:33:36,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:33:36,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-14 12:33:36,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:33:39,208 INFO L124 PetriNetUnfolderBase]: 16708/22865 cut-off events. [2024-06-14 12:33:39,208 INFO L125 PetriNetUnfolderBase]: For 198122/198124 co-relation queries the response was YES. [2024-06-14 12:33:39,313 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. [2024-06-14 12:33:39,407 INFO L140 encePairwiseOnDemand]: 40/54 looper letters, 137 selfloop transitions, 27 changer transitions 0/169 dead transitions. [2024-06-14 12:33:39,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 169 transitions, 1637 flow [2024-06-14 12:33:39,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:33:39,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:33:39,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-14 12:33:39,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-14 12:33:39,409 INFO L175 Difference]: Start difference. First operand has 95 places, 126 transitions, 1051 flow. Second operand 7 states and 175 transitions. [2024-06-14 12:33:39,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 169 transitions, 1637 flow [2024-06-14 12:33:39,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 169 transitions, 1571 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-06-14 12:33:39,531 INFO L231 Difference]: Finished difference. Result has 100 places, 133 transitions, 1148 flow [2024-06-14 12:33:39,531 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} [2024-06-14 12:33:39,531 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 43 predicate places. [2024-06-14 12:33:39,531 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 133 transitions, 1148 flow [2024-06-14 12:33:39,532 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) [2024-06-14 12:33:39,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:33:39,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:33:39,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-14 12:33:39,532 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)] === [2024-06-14 12:33:39,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:33:39,533 INFO L85 PathProgramCache]: Analyzing trace with hash -488736992, now seen corresponding path program 1 times [2024-06-14 12:33:39,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:33:39,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814779385] [2024-06-14 12:33:39,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:33:39,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:33:39,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:33:40,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:33:40,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:33:40,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814779385] [2024-06-14 12:33:40,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814779385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:33:40,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:33:40,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:33:40,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177042891] [2024-06-14 12:33:40,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:33:40,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:33:40,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:33:40,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:33:40,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:33:40,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-14 12:33:40,602 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) [2024-06-14 12:33:40,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:33:40,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-14 12:33:40,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:33:44,202 INFO L124 PetriNetUnfolderBase]: 16728/22892 cut-off events. [2024-06-14 12:33:44,202 INFO L125 PetriNetUnfolderBase]: For 222606/222608 co-relation queries the response was YES. [2024-06-14 12:33:44,269 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. [2024-06-14 12:33:44,350 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 135 selfloop transitions, 33 changer transitions 0/173 dead transitions. [2024-06-14 12:33:44,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 173 transitions, 1718 flow [2024-06-14 12:33:44,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:33:44,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:33:44,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-14 12:33:44,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4656084656084656 [2024-06-14 12:33:44,352 INFO L175 Difference]: Start difference. First operand has 100 places, 133 transitions, 1148 flow. Second operand 7 states and 176 transitions. [2024-06-14 12:33:44,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 173 transitions, 1718 flow [2024-06-14 12:33:44,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 173 transitions, 1644 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-14 12:33:44,449 INFO L231 Difference]: Finished difference. Result has 103 places, 137 transitions, 1207 flow [2024-06-14 12:33:44,450 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} [2024-06-14 12:33:44,450 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 46 predicate places. [2024-06-14 12:33:44,450 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 137 transitions, 1207 flow [2024-06-14 12:33:44,450 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) [2024-06-14 12:33:44,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:33:44,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:33:44,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-14 12:33:44,451 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)] === [2024-06-14 12:33:44,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:33:44,451 INFO L85 PathProgramCache]: Analyzing trace with hash 880182765, now seen corresponding path program 1 times [2024-06-14 12:33:44,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:33:44,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527739018] [2024-06-14 12:33:44,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:33:44,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:33:44,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:33:45,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:33:45,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:33:45,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527739018] [2024-06-14 12:33:45,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527739018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:33:45,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:33:45,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 12:33:45,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928237710] [2024-06-14 12:33:45,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:33:45,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 12:33:45,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:33:45,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 12:33:45,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-14 12:33:45,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-14 12:33:45,123 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) [2024-06-14 12:33:45,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:33:45,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-14 12:33:45,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:33:47,958 INFO L124 PetriNetUnfolderBase]: 16721/22880 cut-off events. [2024-06-14 12:33:47,958 INFO L125 PetriNetUnfolderBase]: For 251127/251127 co-relation queries the response was YES. [2024-06-14 12:33:48,028 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. [2024-06-14 12:33:48,109 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 136 selfloop transitions, 10 changer transitions 0/151 dead transitions. [2024-06-14 12:33:48,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 151 transitions, 1535 flow [2024-06-14 12:33:48,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 12:33:48,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 12:33:48,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-06-14 12:33:48,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-14 12:33:48,110 INFO L175 Difference]: Start difference. First operand has 103 places, 137 transitions, 1207 flow. Second operand 5 states and 117 transitions. [2024-06-14 12:33:48,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 151 transitions, 1535 flow [2024-06-14 12:33:48,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 151 transitions, 1420 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-14 12:33:48,210 INFO L231 Difference]: Finished difference. Result has 103 places, 137 transitions, 1121 flow [2024-06-14 12:33:48,210 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} [2024-06-14 12:33:48,210 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 46 predicate places. [2024-06-14 12:33:48,211 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 137 transitions, 1121 flow [2024-06-14 12:33:48,211 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) [2024-06-14 12:33:48,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:33:48,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:33:48,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-14 12:33:48,211 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)] === [2024-06-14 12:33:48,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:33:48,212 INFO L85 PathProgramCache]: Analyzing trace with hash -760104333, now seen corresponding path program 1 times [2024-06-14 12:33:48,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:33:48,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964812219] [2024-06-14 12:33:48,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:33:48,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:33:48,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:33:49,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:33:49,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:33:49,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964812219] [2024-06-14 12:33:49,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964812219] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:33:49,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:33:49,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:33:49,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648589666] [2024-06-14 12:33:49,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:33:49,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:33:49,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:33:49,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:33:49,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:33:49,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-14 12:33:49,349 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) [2024-06-14 12:33:49,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:33:49,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-14 12:33:49,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:33:52,029 INFO L124 PetriNetUnfolderBase]: 16743/22902 cut-off events. [2024-06-14 12:33:52,029 INFO L125 PetriNetUnfolderBase]: For 273888/273901 co-relation queries the response was YES. [2024-06-14 12:33:52,113 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. [2024-06-14 12:33:52,327 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 145 selfloop transitions, 35 changer transitions 0/185 dead transitions. [2024-06-14 12:33:52,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 185 transitions, 1781 flow [2024-06-14 12:33:52,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:33:52,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:33:52,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-14 12:33:52,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4708994708994709 [2024-06-14 12:33:52,328 INFO L175 Difference]: Start difference. First operand has 103 places, 137 transitions, 1121 flow. Second operand 7 states and 178 transitions. [2024-06-14 12:33:52,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 185 transitions, 1781 flow [2024-06-14 12:33:52,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 185 transitions, 1748 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-14 12:33:52,422 INFO L231 Difference]: Finished difference. Result has 106 places, 145 transitions, 1293 flow [2024-06-14 12:33:52,422 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} [2024-06-14 12:33:52,422 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 49 predicate places. [2024-06-14 12:33:52,423 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 145 transitions, 1293 flow [2024-06-14 12:33:52,423 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) [2024-06-14 12:33:52,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:33:52,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:33:52,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-14 12:33:52,423 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)] === [2024-06-14 12:33:52,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:33:52,423 INFO L85 PathProgramCache]: Analyzing trace with hash -756439203, now seen corresponding path program 2 times [2024-06-14 12:33:52,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:33:52,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992681831] [2024-06-14 12:33:52,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:33:52,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:33:52,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:33:53,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:33:53,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:33:53,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992681831] [2024-06-14 12:33:53,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992681831] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:33:53,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:33:53,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:33:53,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108825355] [2024-06-14 12:33:53,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:33:53,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:33:53,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:33:53,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:33:53,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:33:53,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-14 12:33:53,545 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) [2024-06-14 12:33:53,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:33:53,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-14 12:33:53,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:33:56,379 INFO L124 PetriNetUnfolderBase]: 16734/22890 cut-off events. [2024-06-14 12:33:56,380 INFO L125 PetriNetUnfolderBase]: For 315084/315097 co-relation queries the response was YES. [2024-06-14 12:33:56,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118360 conditions, 22890 events. 16734/22890 cut-off events. For 315084/315097 co-relation queries the response was YES. Maximal size of possible extension queue 686. Compared 123062 event pairs, 7626 based on Foata normal form. 13/22707 useless extension candidates. Maximal degree in co-relation 118316. Up to 22354 conditions per place. [2024-06-14 12:33:56,542 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 145 selfloop transitions, 29 changer transitions 0/179 dead transitions. [2024-06-14 12:33:56,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 179 transitions, 1729 flow [2024-06-14 12:33:56,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:33:56,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:33:56,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-14 12:33:56,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.455026455026455 [2024-06-14 12:33:56,543 INFO L175 Difference]: Start difference. First operand has 106 places, 145 transitions, 1293 flow. Second operand 7 states and 172 transitions. [2024-06-14 12:33:56,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 179 transitions, 1729 flow [2024-06-14 12:33:56,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 179 transitions, 1612 flow, removed 46 selfloop flow, removed 3 redundant places. [2024-06-14 12:33:56,728 INFO L231 Difference]: Finished difference. Result has 110 places, 145 transitions, 1245 flow [2024-06-14 12:33:56,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1176, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1245, PETRI_PLACES=110, PETRI_TRANSITIONS=145} [2024-06-14 12:33:56,728 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 53 predicate places. [2024-06-14 12:33:56,729 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 145 transitions, 1245 flow [2024-06-14 12:33:56,729 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) [2024-06-14 12:33:56,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:33:56,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:33:56,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-14 12:33:56,730 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 12:33:56,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:33:56,731 INFO L85 PathProgramCache]: Analyzing trace with hash -756294898, now seen corresponding path program 1 times [2024-06-14 12:33:56,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:33:56,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508288576] [2024-06-14 12:33:56,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:33:56,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:33:56,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:33:57,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:33:57,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:33:57,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508288576] [2024-06-14 12:33:57,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508288576] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:33:57,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:33:57,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:33:57,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13619873] [2024-06-14 12:33:57,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:33:57,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:33:57,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:33:57,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:33:57,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:33:57,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-14 12:33:57,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 145 transitions, 1245 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) [2024-06-14 12:33:57,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:33:57,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-14 12:33:57,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand