./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix053_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/mix053_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 76401ed0 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/mix053_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-05-21_14-57-05.files/protection/mix053_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-76401ed-m [2024-06-20 16:29:51,681 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-20 16:29:51,748 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-20 16:29:51,751 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-20 16:29:51,752 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-20 16:29:51,776 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-20 16:29:51,777 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-20 16:29:51,777 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-20 16:29:51,778 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-20 16:29:51,782 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-20 16:29:51,782 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-20 16:29:51,783 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-20 16:29:51,783 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-20 16:29:51,785 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-20 16:29:51,785 INFO L153 SettingsManager]: * Use SBE=true [2024-06-20 16:29:51,785 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-20 16:29:51,785 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-20 16:29:51,785 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-20 16:29:51,786 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-20 16:29:51,786 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-20 16:29:51,786 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-20 16:29:51,787 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-20 16:29:51,787 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-20 16:29:51,787 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-20 16:29:51,787 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-20 16:29:51,787 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-20 16:29:51,788 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-20 16:29:51,788 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-20 16:29:51,788 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-20 16:29:51,789 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-20 16:29:51,789 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-20 16:29:51,790 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-20 16:29:51,790 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-20 16:29:51,790 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-20 16:29:51,790 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-20 16:29:51,790 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-20 16:29:51,791 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-20 16:29:51,791 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-20 16:29:51,791 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-20 16:29:51,791 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-20 16:29:51,791 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-20 16:29:51,792 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-20 16:29:51,792 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-20 16:29:51,792 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-20 16:29:51,998 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-20 16:29:52,012 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-20 16:29:52,016 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-20 16:29:52,017 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-20 16:29:52,017 INFO L274 PluginConnector]: CDTParser initialized [2024-06-20 16:29:52,018 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix053_power.oepc_pso.oepc_rmo.oepc.i [2024-06-20 16:29:53,111 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-20 16:29:53,313 INFO L384 CDTParser]: Found 1 translation units. [2024-06-20 16:29:53,313 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix053_power.oepc_pso.oepc_rmo.oepc.i [2024-06-20 16:29:53,329 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad2140450/f634fdb55ff142c296244e5956c37e01/FLAG0a15e09b5 [2024-06-20 16:29:53,343 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad2140450/f634fdb55ff142c296244e5956c37e01 [2024-06-20 16:29:53,345 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-20 16:29:53,345 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-20 16:29:53,346 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/mix053_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-20 16:29:53,549 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-20 16:29:53,550 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-20 16:29:53,551 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-20 16:29:53,551 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-20 16:29:53,558 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-20 16:29:53,559 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.06 04:29:53" (1/2) ... [2024-06-20 16:29:53,560 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29856049 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 04:29:53, skipping insertion in model container [2024-06-20 16:29:53,560 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.06 04:29:53" (1/2) ... [2024-06-20 16:29:53,561 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3ffdb5b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 04:29:53, skipping insertion in model container [2024-06-20 16:29:53,561 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 04:29:53" (2/2) ... [2024-06-20 16:29:53,562 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29856049 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:29:53, skipping insertion in model container [2024-06-20 16:29:53,562 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 04:29:53" (2/2) ... [2024-06-20 16:29:53,562 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-20 16:29:53,648 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-20 16:29:53,649 INFO L97 edCorrectnessWitness]: Location invariant before [L862-L862] ((((((((((((((((((((! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= a$mem_tmp && a$mem_tmp <= 1) && (a$mem_tmp == 0 || a$mem_tmp == 1)))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= a$w_buff0 && a$w_buff0 <= 1) && (a$w_buff0 == 0 || a$w_buff0 == 1)))) && (! multithreaded || ((0 <= a$w_buff1 && a$w_buff1 <= 1) && (a$w_buff1 == 0 || a$w_buff1 == 1)))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0) [2024-06-20 16:29:53,649 INFO L97 edCorrectnessWitness]: Location invariant before [L866-L866] ((((((((((((((((((((! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= a$mem_tmp && a$mem_tmp <= 1) && (a$mem_tmp == 0 || a$mem_tmp == 1)))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= a$w_buff0 && a$w_buff0 <= 1) && (a$w_buff0 == 0 || a$w_buff0 == 1)))) && (! multithreaded || ((0 <= a$w_buff1 && a$w_buff1 <= 1) && (a$w_buff1 == 0 || a$w_buff1 == 1)))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0) [2024-06-20 16:29:53,649 INFO L97 edCorrectnessWitness]: Location invariant before [L867-L867] ((((((((((((((((((((! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= a$mem_tmp && a$mem_tmp <= 1) && (a$mem_tmp == 0 || a$mem_tmp == 1)))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= a$w_buff0 && a$w_buff0 <= 1) && (a$w_buff0 == 0 || a$w_buff0 == 1)))) && (! multithreaded || ((0 <= a$w_buff1 && a$w_buff1 <= 1) && (a$w_buff1 == 0 || a$w_buff1 == 1)))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0) [2024-06-20 16:29:53,650 INFO L97 edCorrectnessWitness]: Location invariant before [L864-L864] ((((((((((((((((((((! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= a$mem_tmp && a$mem_tmp <= 1) && (a$mem_tmp == 0 || a$mem_tmp == 1)))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= a$w_buff0 && a$w_buff0 <= 1) && (a$w_buff0 == 0 || a$w_buff0 == 1)))) && (! multithreaded || ((0 <= a$w_buff1 && a$w_buff1 <= 1) && (a$w_buff1 == 0 || a$w_buff1 == 1)))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0) [2024-06-20 16:29:53,650 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-20 16:29:53,651 INFO L106 edCorrectnessWitness]: ghost_update [L860-L860] multithreaded = 1; [2024-06-20 16:29:53,688 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-20 16:29:54,024 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-20 16:29:54,036 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-20 16:29:54,129 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-20 16:29:54,156 INFO L206 MainTranslator]: Completed translation [2024-06-20 16:29:54,156 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:29:54 WrapperNode [2024-06-20 16:29:54,157 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-20 16:29:54,158 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-20 16:29:54,158 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-20 16:29:54,158 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-20 16:29:54,164 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:29:54" (1/1) ... [2024-06-20 16:29:54,194 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:29:54" (1/1) ... [2024-06-20 16:29:54,223 INFO L138 Inliner]: procedures = 176, calls = 52, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 137 [2024-06-20 16:29:54,223 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-20 16:29:54,224 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-20 16:29:54,224 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-20 16:29:54,224 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-20 16:29:54,240 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:29:54" (1/1) ... [2024-06-20 16:29:54,240 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:29:54" (1/1) ... [2024-06-20 16:29:54,244 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:29:54" (1/1) ... [2024-06-20 16:29:54,269 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]. [2024-06-20 16:29:54,271 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:29:54" (1/1) ... [2024-06-20 16:29:54,272 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:29:54" (1/1) ... [2024-06-20 16:29:54,286 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:29:54" (1/1) ... [2024-06-20 16:29:54,294 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:29:54" (1/1) ... [2024-06-20 16:29:54,301 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:29:54" (1/1) ... [2024-06-20 16:29:54,303 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:29:54" (1/1) ... [2024-06-20 16:29:54,308 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-20 16:29:54,310 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-20 16:29:54,311 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-20 16:29:54,311 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-20 16:29:54,312 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:29:54" (1/1) ... [2024-06-20 16:29:54,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-20 16:29:54,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-20 16:29:54,357 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-20 16:29:54,364 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 [2024-06-20 16:29:54,424 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-20 16:29:54,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-20 16:29:54,424 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-20 16:29:54,425 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-20 16:29:54,425 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-20 16:29:54,426 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-20 16:29:54,426 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-20 16:29:54,426 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-20 16:29:54,426 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-20 16:29:54,427 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-20 16:29:54,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-20 16:29:54,427 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-20 16:29:54,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-20 16:29:54,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-20 16:29:54,429 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-20 16:29:54,543 INFO L244 CfgBuilder]: Building ICFG [2024-06-20 16:29:54,545 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-20 16:29:54,876 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-20 16:29:54,876 INFO L293 CfgBuilder]: Performing block encoding [2024-06-20 16:29:55,066 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-20 16:29:55,067 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-20 16:29:55,067 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 04:29:55 BoogieIcfgContainer [2024-06-20 16:29:55,067 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-20 16:29:55,070 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-20 16:29:55,070 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-20 16:29:55,072 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-20 16:29:55,072 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.06 04:29:53" (1/4) ... [2024-06-20 16:29:55,073 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33efea6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.06 04:29:55, skipping insertion in model container [2024-06-20 16:29:55,073 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 04:29:53" (2/4) ... [2024-06-20 16:29:55,074 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33efea6c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.06 04:29:55, skipping insertion in model container [2024-06-20 16:29:55,074 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:29:54" (3/4) ... [2024-06-20 16:29:55,074 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33efea6c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.06 04:29:55, skipping insertion in model container [2024-06-20 16:29:55,074 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 04:29:55" (4/4) ... [2024-06-20 16:29:55,075 INFO L112 eAbstractionObserver]: Analyzing ICFG mix053_power.oepc_pso.oepc_rmo.oepc.i [2024-06-20 16:29:55,089 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-20 16:29:55,089 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-20 16:29:55,089 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-20 16:29:55,140 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-20 16:29:55,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 51 transitions, 118 flow [2024-06-20 16:29:55,196 INFO L124 PetriNetUnfolderBase]: 0/47 cut-off events. [2024-06-20 16:29:55,197 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-20 16:29:55,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 47 events. 0/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 89 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-20 16:29:55,199 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 51 transitions, 118 flow [2024-06-20 16:29:55,203 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 41 transitions, 94 flow [2024-06-20 16:29:55,214 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-20 16:29:55,221 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;@27ce7a26, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-20 16:29:55,222 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-20 16:29:55,226 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-20 16:29:55,227 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-20 16:29:55,227 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-20 16:29:55,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:29:55,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-20 16:29:55,228 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)] === [2024-06-20 16:29:55,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:29:55,232 INFO L85 PathProgramCache]: Analyzing trace with hash 394003208, now seen corresponding path program 1 times [2024-06-20 16:29:55,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:29:55,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99707702] [2024-06-20 16:29:55,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:29:55,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:29:55,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:29:56,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:29:56,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:29:56,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99707702] [2024-06-20 16:29:56,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99707702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:29:56,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:29:56,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-20 16:29:56,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216693589] [2024-06-20 16:29:56,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:29:56,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-20 16:29:56,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:29:56,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-20 16:29:56,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-20 16:29:56,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-20 16:29:56,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 41 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:29:56,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:29:56,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-20 16:29:56,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:29:58,181 INFO L124 PetriNetUnfolderBase]: 11639/15919 cut-off events. [2024-06-20 16:29:58,181 INFO L125 PetriNetUnfolderBase]: For 220/220 co-relation queries the response was YES. [2024-06-20 16:29:58,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32135 conditions, 15919 events. 11639/15919 cut-off events. For 220/220 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 83871 event pairs, 9112 based on Foata normal form. 1/15700 useless extension candidates. Maximal degree in co-relation 32122. Up to 15753 conditions per place. [2024-06-20 16:29:58,278 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 44 selfloop transitions, 5 changer transitions 0/55 dead transitions. [2024-06-20 16:29:58,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 55 transitions, 229 flow [2024-06-20 16:29:58,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-20 16:29:58,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-20 16:29:58,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 92 transitions. [2024-06-20 16:29:58,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6013071895424836 [2024-06-20 16:29:58,289 INFO L175 Difference]: Start difference. First operand has 54 places, 41 transitions, 94 flow. Second operand 3 states and 92 transitions. [2024-06-20 16:29:58,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 55 transitions, 229 flow [2024-06-20 16:29:58,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 55 transitions, 222 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-20 16:29:58,297 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 129 flow [2024-06-20 16:29:58,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2024-06-20 16:29:58,302 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -1 predicate places. [2024-06-20 16:29:58,302 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 129 flow [2024-06-20 16:29:58,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:29:58,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:29:58,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:29:58,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-20 16:29:58,303 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)] === [2024-06-20 16:29:58,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:29:58,304 INFO L85 PathProgramCache]: Analyzing trace with hash 680618781, now seen corresponding path program 1 times [2024-06-20 16:29:58,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:29:58,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520875600] [2024-06-20 16:29:58,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:29:58,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:29:58,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:29:59,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:29:59,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:29:59,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520875600] [2024-06-20 16:29:59,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520875600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:29:59,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:29:59,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-20 16:29:59,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720342609] [2024-06-20 16:29:59,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:29:59,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-20 16:29:59,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:29:59,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-20 16:29:59,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-20 16:29:59,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-20 16:29:59,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:29:59,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:29:59,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-20 16:29:59,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:30:00,586 INFO L124 PetriNetUnfolderBase]: 11629/15905 cut-off events. [2024-06-20 16:30:00,586 INFO L125 PetriNetUnfolderBase]: For 2878/2878 co-relation queries the response was YES. [2024-06-20 16:30:00,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36114 conditions, 15905 events. 11629/15905 cut-off events. For 2878/2878 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 83851 event pairs, 8311 based on Foata normal form. 4/15908 useless extension candidates. Maximal degree in co-relation 36102. Up to 15718 conditions per place. [2024-06-20 16:30:00,660 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 54 selfloop transitions, 9 changer transitions 0/69 dead transitions. [2024-06-20 16:30:00,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 69 transitions, 321 flow [2024-06-20 16:30:00,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-20 16:30:00,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-20 16:30:00,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2024-06-20 16:30:00,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-20 16:30:00,662 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 129 flow. Second operand 4 states and 119 transitions. [2024-06-20 16:30:00,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 69 transitions, 321 flow [2024-06-20 16:30:00,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 69 transitions, 316 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-20 16:30:00,664 INFO L231 Difference]: Finished difference. Result has 56 places, 49 transitions, 177 flow [2024-06-20 16:30:00,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=56, PETRI_TRANSITIONS=49} [2024-06-20 16:30:00,665 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 2 predicate places. [2024-06-20 16:30:00,665 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 49 transitions, 177 flow [2024-06-20 16:30:00,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:00,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:30:00,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:30:00,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-20 16:30:00,666 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)] === [2024-06-20 16:30:00,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:30:00,667 INFO L85 PathProgramCache]: Analyzing trace with hash -375652567, now seen corresponding path program 1 times [2024-06-20 16:30:00,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:30:00,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488104911] [2024-06-20 16:30:00,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:30:00,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:30:00,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:30:01,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:30:01,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:30:01,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488104911] [2024-06-20 16:30:01,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488104911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:30:01,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:30:01,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-20 16:30:01,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566284365] [2024-06-20 16:30:01,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:30:01,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-20 16:30:01,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:30:01,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-20 16:30:01,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-20 16:30:01,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-20 16:30:01,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 49 transitions, 177 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:01,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:30:01,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-20 16:30:01,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:30:03,021 INFO L124 PetriNetUnfolderBase]: 11647/15976 cut-off events. [2024-06-20 16:30:03,021 INFO L125 PetriNetUnfolderBase]: For 8291/8291 co-relation queries the response was YES. [2024-06-20 16:30:03,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40209 conditions, 15976 events. 11647/15976 cut-off events. For 8291/8291 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 84601 event pairs, 6980 based on Foata normal form. 7/15982 useless extension candidates. Maximal degree in co-relation 40195. Up to 15639 conditions per place. [2024-06-20 16:30:03,085 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 72 selfloop transitions, 21 changer transitions 0/99 dead transitions. [2024-06-20 16:30:03,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 99 transitions, 537 flow [2024-06-20 16:30:03,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-20 16:30:03,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-20 16:30:03,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 156 transitions. [2024-06-20 16:30:03,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.611764705882353 [2024-06-20 16:30:03,090 INFO L175 Difference]: Start difference. First operand has 56 places, 49 transitions, 177 flow. Second operand 5 states and 156 transitions. [2024-06-20 16:30:03,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 99 transitions, 537 flow [2024-06-20 16:30:03,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 99 transitions, 518 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-20 16:30:03,095 INFO L231 Difference]: Finished difference. Result has 61 places, 63 transitions, 308 flow [2024-06-20 16:30:03,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=308, PETRI_PLACES=61, PETRI_TRANSITIONS=63} [2024-06-20 16:30:03,097 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 7 predicate places. [2024-06-20 16:30:03,097 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 63 transitions, 308 flow [2024-06-20 16:30:03,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:03,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:30:03,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:30:03,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-20 16:30:03,098 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)] === [2024-06-20 16:30:03,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:30:03,099 INFO L85 PathProgramCache]: Analyzing trace with hash 657855814, now seen corresponding path program 1 times [2024-06-20 16:30:03,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:30:03,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027411433] [2024-06-20 16:30:03,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:30:03,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:30:03,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:30:03,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:30:03,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:30:03,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027411433] [2024-06-20 16:30:03,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027411433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:30:03,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:30:03,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-20 16:30:03,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445955721] [2024-06-20 16:30:03,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:30:03,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-20 16:30:03,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:30:03,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-20 16:30:03,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-20 16:30:04,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-20 16:30:04,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 63 transitions, 308 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:04,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:30:04,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-20 16:30:04,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:30:05,658 INFO L124 PetriNetUnfolderBase]: 11665/16006 cut-off events. [2024-06-20 16:30:05,658 INFO L125 PetriNetUnfolderBase]: For 19469/19473 co-relation queries the response was YES. [2024-06-20 16:30:05,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46456 conditions, 16006 events. 11665/16006 cut-off events. For 19469/19473 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 84854 event pairs, 6185 based on Foata normal form. 11/16016 useless extension candidates. Maximal degree in co-relation 46439. Up to 15625 conditions per place. [2024-06-20 16:30:05,757 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 82 selfloop transitions, 26 changer transitions 0/114 dead transitions. [2024-06-20 16:30:05,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 114 transitions, 706 flow [2024-06-20 16:30:05,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 16:30:05,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 16:30:05,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 184 transitions. [2024-06-20 16:30:05,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6013071895424836 [2024-06-20 16:30:05,759 INFO L175 Difference]: Start difference. First operand has 61 places, 63 transitions, 308 flow. Second operand 6 states and 184 transitions. [2024-06-20 16:30:05,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 114 transitions, 706 flow [2024-06-20 16:30:05,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 114 transitions, 694 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-20 16:30:05,766 INFO L231 Difference]: Finished difference. Result has 67 places, 68 transitions, 402 flow [2024-06-20 16:30:05,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=402, PETRI_PLACES=67, PETRI_TRANSITIONS=68} [2024-06-20 16:30:05,767 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 13 predicate places. [2024-06-20 16:30:05,767 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 68 transitions, 402 flow [2024-06-20 16:30:05,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:05,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:30:05,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:30:05,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-20 16:30:05,768 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)] === [2024-06-20 16:30:05,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:30:05,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1081304482, now seen corresponding path program 1 times [2024-06-20 16:30:05,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:30:05,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918818588] [2024-06-20 16:30:05,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:30:05,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:30:05,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:30:06,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:30:06,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:30:06,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918818588] [2024-06-20 16:30:06,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918818588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:30:06,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:30:06,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 16:30:06,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410761251] [2024-06-20 16:30:06,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:30:06,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 16:30:06,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:30:06,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 16:30:06,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-20 16:30:06,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-20 16:30:06,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 68 transitions, 402 flow. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:06,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:30:06,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-20 16:30:06,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:30:08,457 INFO L124 PetriNetUnfolderBase]: 11694/16050 cut-off events. [2024-06-20 16:30:08,458 INFO L125 PetriNetUnfolderBase]: For 30861/30865 co-relation queries the response was YES. [2024-06-20 16:30:08,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51366 conditions, 16050 events. 11694/16050 cut-off events. For 30861/30865 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 85065 event pairs, 5263 based on Foata normal form. 18/16067 useless extension candidates. Maximal degree in co-relation 51346. Up to 15590 conditions per place. [2024-06-20 16:30:08,551 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 89 selfloop transitions, 30 changer transitions 0/125 dead transitions. [2024-06-20 16:30:08,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 125 transitions, 850 flow [2024-06-20 16:30:08,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:30:08,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:30:08,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 208 transitions. [2024-06-20 16:30:08,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5826330532212886 [2024-06-20 16:30:08,553 INFO L175 Difference]: Start difference. First operand has 67 places, 68 transitions, 402 flow. Second operand 7 states and 208 transitions. [2024-06-20 16:30:08,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 125 transitions, 850 flow [2024-06-20 16:30:08,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 125 transitions, 784 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-20 16:30:08,567 INFO L231 Difference]: Finished difference. Result has 69 places, 71 transitions, 441 flow [2024-06-20 16:30:08,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=441, PETRI_PLACES=69, PETRI_TRANSITIONS=71} [2024-06-20 16:30:08,573 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 15 predicate places. [2024-06-20 16:30:08,573 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 71 transitions, 441 flow [2024-06-20 16:30:08,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:08,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:30:08,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:30:08,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-20 16:30:08,574 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)] === [2024-06-20 16:30:08,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:30:08,574 INFO L85 PathProgramCache]: Analyzing trace with hash 2090783415, now seen corresponding path program 1 times [2024-06-20 16:30:08,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:30:08,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138108159] [2024-06-20 16:30:08,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:30:08,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:30:08,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:30:09,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:30:09,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:30:09,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138108159] [2024-06-20 16:30:09,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138108159] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:30:09,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:30:09,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-20 16:30:09,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015985033] [2024-06-20 16:30:09,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:30:09,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-20 16:30:09,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:30:09,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-20 16:30:09,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-20 16:30:09,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-20 16:30:09,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 71 transitions, 441 flow. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:09,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:30:09,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-20 16:30:09,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:30:11,015 INFO L124 PetriNetUnfolderBase]: 11685/16027 cut-off events. [2024-06-20 16:30:11,015 INFO L125 PetriNetUnfolderBase]: For 47789/47789 co-relation queries the response was YES. [2024-06-20 16:30:11,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55151 conditions, 16027 events. 11685/16027 cut-off events. For 47789/47789 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 85581 event pairs, 7584 based on Foata normal form. 3/16015 useless extension candidates. Maximal degree in co-relation 55129. Up to 15805 conditions per place. [2024-06-20 16:30:11,126 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 72 selfloop transitions, 12 changer transitions 0/89 dead transitions. [2024-06-20 16:30:11,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 89 transitions, 665 flow [2024-06-20 16:30:11,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 16:30:11,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 16:30:11,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 130 transitions. [2024-06-20 16:30:11,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42483660130718953 [2024-06-20 16:30:11,127 INFO L175 Difference]: Start difference. First operand has 69 places, 71 transitions, 441 flow. Second operand 6 states and 130 transitions. [2024-06-20 16:30:11,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 89 transitions, 665 flow [2024-06-20 16:30:11,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 89 transitions, 576 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-20 16:30:11,137 INFO L231 Difference]: Finished difference. Result has 71 places, 73 transitions, 406 flow [2024-06-20 16:30:11,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=406, PETRI_PLACES=71, PETRI_TRANSITIONS=73} [2024-06-20 16:30:11,138 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 17 predicate places. [2024-06-20 16:30:11,138 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 73 transitions, 406 flow [2024-06-20 16:30:11,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:11,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:30:11,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:30:11,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-20 16:30:11,139 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)] === [2024-06-20 16:30:11,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:30:11,139 INFO L85 PathProgramCache]: Analyzing trace with hash 388854913, now seen corresponding path program 1 times [2024-06-20 16:30:11,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:30:11,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003585600] [2024-06-20 16:30:11,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:30:11,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:30:11,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:30:11,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:30:11,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:30:11,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003585600] [2024-06-20 16:30:11,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003585600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:30:11,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:30:11,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 16:30:11,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135045319] [2024-06-20 16:30:11,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:30:11,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 16:30:11,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:30:11,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 16:30:11,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-20 16:30:11,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-20 16:30:11,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 73 transitions, 406 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:11,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:30:11,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-20 16:30:11,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:30:13,671 INFO L124 PetriNetUnfolderBase]: 11751/16139 cut-off events. [2024-06-20 16:30:13,672 INFO L125 PetriNetUnfolderBase]: For 54294/54294 co-relation queries the response was YES. [2024-06-20 16:30:13,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56216 conditions, 16139 events. 11751/16139 cut-off events. For 54294/54294 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 86598 event pairs, 7242 based on Foata normal form. 14/16139 useless extension candidates. Maximal degree in co-relation 56191. Up to 15681 conditions per place. [2024-06-20 16:30:13,764 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 90 selfloop transitions, 24 changer transitions 0/119 dead transitions. [2024-06-20 16:30:13,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 119 transitions, 856 flow [2024-06-20 16:30:13,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:30:13,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:30:13,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-20 16:30:13,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46218487394957986 [2024-06-20 16:30:13,766 INFO L175 Difference]: Start difference. First operand has 71 places, 73 transitions, 406 flow. Second operand 7 states and 165 transitions. [2024-06-20 16:30:13,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 119 transitions, 856 flow [2024-06-20 16:30:13,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 119 transitions, 824 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-20 16:30:13,796 INFO L231 Difference]: Finished difference. Result has 76 places, 87 transitions, 564 flow [2024-06-20 16:30:13,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=564, PETRI_PLACES=76, PETRI_TRANSITIONS=87} [2024-06-20 16:30:13,797 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 22 predicate places. [2024-06-20 16:30:13,797 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 87 transitions, 564 flow [2024-06-20 16:30:13,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:13,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:30:13,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:30:13,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-20 16:30:13,798 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)] === [2024-06-20 16:30:13,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:30:13,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1820340162, now seen corresponding path program 1 times [2024-06-20 16:30:13,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:30:13,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616798393] [2024-06-20 16:30:13,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:30:13,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:30:13,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:30:14,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:30:14,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:30:14,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616798393] [2024-06-20 16:30:14,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616798393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:30:14,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:30:14,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 16:30:14,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266602132] [2024-06-20 16:30:14,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:30:14,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 16:30:14,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:30:14,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 16:30:14,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-20 16:30:14,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-20 16:30:14,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 87 transitions, 564 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:14,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:30:14,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-20 16:30:14,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:30:16,179 INFO L124 PetriNetUnfolderBase]: 11918/16370 cut-off events. [2024-06-20 16:30:16,180 INFO L125 PetriNetUnfolderBase]: For 71124/71148 co-relation queries the response was YES. [2024-06-20 16:30:16,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63447 conditions, 16370 events. 11918/16370 cut-off events. For 71124/71148 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 86516 event pairs, 5935 based on Foata normal form. 30/16399 useless extension candidates. Maximal degree in co-relation 63420. Up to 15924 conditions per place. [2024-06-20 16:30:16,294 INFO L140 encePairwiseOnDemand]: 36/51 looper letters, 100 selfloop transitions, 40 changer transitions 0/145 dead transitions. [2024-06-20 16:30:16,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 145 transitions, 1142 flow [2024-06-20 16:30:16,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:30:16,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:30:16,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-20 16:30:16,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4957983193277311 [2024-06-20 16:30:16,295 INFO L175 Difference]: Start difference. First operand has 76 places, 87 transitions, 564 flow. Second operand 7 states and 177 transitions. [2024-06-20 16:30:16,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 145 transitions, 1142 flow [2024-06-20 16:30:16,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 145 transitions, 1111 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-06-20 16:30:16,338 INFO L231 Difference]: Finished difference. Result has 83 places, 107 transitions, 788 flow [2024-06-20 16:30:16,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=533, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=788, PETRI_PLACES=83, PETRI_TRANSITIONS=107} [2024-06-20 16:30:16,339 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 29 predicate places. [2024-06-20 16:30:16,339 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 107 transitions, 788 flow [2024-06-20 16:30:16,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:16,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:30:16,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:30:16,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-20 16:30:16,340 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)] === [2024-06-20 16:30:16,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:30:16,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1694994892, now seen corresponding path program 2 times [2024-06-20 16:30:16,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:30:16,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210609719] [2024-06-20 16:30:16,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:30:16,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:30:16,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:30:17,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:30:17,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:30:17,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210609719] [2024-06-20 16:30:17,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210609719] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:30:17,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:30:17,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 16:30:17,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143420416] [2024-06-20 16:30:17,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:30:17,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 16:30:17,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:30:17,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 16:30:17,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-20 16:30:17,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-20 16:30:17,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 107 transitions, 788 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:17,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:30:17,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-20 16:30:17,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:30:18,688 INFO L124 PetriNetUnfolderBase]: 11942/16405 cut-off events. [2024-06-20 16:30:18,688 INFO L125 PetriNetUnfolderBase]: For 79544/79568 co-relation queries the response was YES. [2024-06-20 16:30:18,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64954 conditions, 16405 events. 11942/16405 cut-off events. For 79544/79568 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 86740 event pairs, 5944 based on Foata normal form. 34/16438 useless extension candidates. Maximal degree in co-relation 64923. Up to 15936 conditions per place. [2024-06-20 16:30:18,814 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 93 selfloop transitions, 46 changer transitions 0/144 dead transitions. [2024-06-20 16:30:18,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 144 transitions, 1284 flow [2024-06-20 16:30:18,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 16:30:18,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 16:30:18,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2024-06-20 16:30:18,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49019607843137253 [2024-06-20 16:30:18,817 INFO L175 Difference]: Start difference. First operand has 83 places, 107 transitions, 788 flow. Second operand 6 states and 150 transitions. [2024-06-20 16:30:18,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 144 transitions, 1284 flow [2024-06-20 16:30:18,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 144 transitions, 1225 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-20 16:30:18,884 INFO L231 Difference]: Finished difference. Result has 86 places, 114 transitions, 921 flow [2024-06-20 16:30:18,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=735, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=921, PETRI_PLACES=86, PETRI_TRANSITIONS=114} [2024-06-20 16:30:18,884 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 32 predicate places. [2024-06-20 16:30:18,884 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 114 transitions, 921 flow [2024-06-20 16:30:18,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:18,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:30:18,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:30:18,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-20 16:30:18,885 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)] === [2024-06-20 16:30:18,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:30:18,886 INFO L85 PathProgramCache]: Analyzing trace with hash -801807082, now seen corresponding path program 3 times [2024-06-20 16:30:18,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:30:18,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023837737] [2024-06-20 16:30:18,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:30:18,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:30:18,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:30:19,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:30:19,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:30:19,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023837737] [2024-06-20 16:30:19,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023837737] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:30:19,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:30:19,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 16:30:19,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150723544] [2024-06-20 16:30:19,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:30:19,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 16:30:19,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:30:19,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 16:30:19,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-20 16:30:19,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-20 16:30:19,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 114 transitions, 921 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:19,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:30:19,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-20 16:30:19,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:30:21,383 INFO L124 PetriNetUnfolderBase]: 11900/16349 cut-off events. [2024-06-20 16:30:21,383 INFO L125 PetriNetUnfolderBase]: For 96328/96328 co-relation queries the response was YES. [2024-06-20 16:30:21,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66071 conditions, 16349 events. 11900/16349 cut-off events. For 96328/96328 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 87656 event pairs, 7393 based on Foata normal form. 5/16341 useless extension candidates. Maximal degree in co-relation 66039. Up to 16072 conditions per place. [2024-06-20 16:30:21,508 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 115 selfloop transitions, 18 changer transitions 0/138 dead transitions. [2024-06-20 16:30:21,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 138 transitions, 1267 flow [2024-06-20 16:30:21,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 16:30:21,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 16:30:21,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-20 16:30:21,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45751633986928103 [2024-06-20 16:30:21,509 INFO L175 Difference]: Start difference. First operand has 86 places, 114 transitions, 921 flow. Second operand 6 states and 140 transitions. [2024-06-20 16:30:21,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 138 transitions, 1267 flow [2024-06-20 16:30:21,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 138 transitions, 1186 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-20 16:30:21,612 INFO L231 Difference]: Finished difference. Result has 89 places, 114 transitions, 890 flow [2024-06-20 16:30:21,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=840, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=890, PETRI_PLACES=89, PETRI_TRANSITIONS=114} [2024-06-20 16:30:21,613 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 35 predicate places. [2024-06-20 16:30:21,613 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 114 transitions, 890 flow [2024-06-20 16:30:21,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:21,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:30:21,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:30:21,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-20 16:30:21,614 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)] === [2024-06-20 16:30:21,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:30:21,614 INFO L85 PathProgramCache]: Analyzing trace with hash 595971222, now seen corresponding path program 1 times [2024-06-20 16:30:21,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:30:21,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325360518] [2024-06-20 16:30:21,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:30:21,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:30:21,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:30:22,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:30:22,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:30:22,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325360518] [2024-06-20 16:30:22,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325360518] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:30:22,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:30:22,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:30:22,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299673543] [2024-06-20 16:30:22,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:30:22,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:30:22,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:30:22,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:30:22,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:30:22,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-20 16:30:22,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 114 transitions, 890 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:22,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:30:22,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-20 16:30:22,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:30:24,547 INFO L124 PetriNetUnfolderBase]: 12912/17699 cut-off events. [2024-06-20 16:30:24,548 INFO L125 PetriNetUnfolderBase]: For 98555/98575 co-relation queries the response was YES. [2024-06-20 16:30:24,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71460 conditions, 17699 events. 12912/17699 cut-off events. For 98555/98575 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 94021 event pairs, 5184 based on Foata normal form. 45/17737 useless extension candidates. Maximal degree in co-relation 71427. Up to 16046 conditions per place. [2024-06-20 16:30:24,697 INFO L140 encePairwiseOnDemand]: 32/51 looper letters, 148 selfloop transitions, 59 changer transitions 0/212 dead transitions. [2024-06-20 16:30:24,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 212 transitions, 1994 flow [2024-06-20 16:30:24,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:30:24,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:30:24,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 220 transitions. [2024-06-20 16:30:24,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5392156862745098 [2024-06-20 16:30:24,700 INFO L175 Difference]: Start difference. First operand has 89 places, 114 transitions, 890 flow. Second operand 8 states and 220 transitions. [2024-06-20 16:30:24,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 212 transitions, 1994 flow [2024-06-20 16:30:24,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 212 transitions, 1887 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-20 16:30:24,804 INFO L231 Difference]: Finished difference. Result has 95 places, 145 transitions, 1256 flow [2024-06-20 16:30:24,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1256, PETRI_PLACES=95, PETRI_TRANSITIONS=145} [2024-06-20 16:30:24,805 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 41 predicate places. [2024-06-20 16:30:24,805 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 145 transitions, 1256 flow [2024-06-20 16:30:24,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:24,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:30:24,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:30:24,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-20 16:30:24,806 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)] === [2024-06-20 16:30:24,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:30:24,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1722685554, now seen corresponding path program 2 times [2024-06-20 16:30:24,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:30:24,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216154948] [2024-06-20 16:30:24,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:30:24,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:30:24,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:30:25,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:30:25,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:30:25,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216154948] [2024-06-20 16:30:25,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216154948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:30:25,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:30:25,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:30:25,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258044873] [2024-06-20 16:30:25,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:30:25,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:30:25,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:30:25,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:30:25,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:30:25,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-20 16:30:25,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 145 transitions, 1256 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:25,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:30:25,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-20 16:30:25,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:30:27,988 INFO L124 PetriNetUnfolderBase]: 14252/19545 cut-off events. [2024-06-20 16:30:27,988 INFO L125 PetriNetUnfolderBase]: For 150046/150080 co-relation queries the response was YES. [2024-06-20 16:30:28,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94071 conditions, 19545 events. 14252/19545 cut-off events. For 150046/150080 co-relation queries the response was YES. Maximal size of possible extension queue 600. Compared 105242 event pairs, 5299 based on Foata normal form. 83/19618 useless extension candidates. Maximal degree in co-relation 94033. Up to 16740 conditions per place. [2024-06-20 16:30:28,154 INFO L140 encePairwiseOnDemand]: 35/51 looper letters, 143 selfloop transitions, 86 changer transitions 0/234 dead transitions. [2024-06-20 16:30:28,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 234 transitions, 2446 flow [2024-06-20 16:30:28,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:30:28,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:30:28,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 190 transitions. [2024-06-20 16:30:28,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5322128851540616 [2024-06-20 16:30:28,156 INFO L175 Difference]: Start difference. First operand has 95 places, 145 transitions, 1256 flow. Second operand 7 states and 190 transitions. [2024-06-20 16:30:28,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 234 transitions, 2446 flow [2024-06-20 16:30:28,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 234 transitions, 2376 flow, removed 34 selfloop flow, removed 1 redundant places. [2024-06-20 16:30:28,292 INFO L231 Difference]: Finished difference. Result has 103 places, 174 transitions, 1768 flow [2024-06-20 16:30:28,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1202, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1768, PETRI_PLACES=103, PETRI_TRANSITIONS=174} [2024-06-20 16:30:28,293 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 49 predicate places. [2024-06-20 16:30:28,293 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 174 transitions, 1768 flow [2024-06-20 16:30:28,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:28,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:30:28,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:30:28,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-20 16:30:28,293 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)] === [2024-06-20 16:30:28,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:30:28,294 INFO L85 PathProgramCache]: Analyzing trace with hash 914022432, now seen corresponding path program 3 times [2024-06-20 16:30:28,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:30:28,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493601487] [2024-06-20 16:30:28,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:30:28,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:30:28,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:30:29,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:30:29,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:30:29,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493601487] [2024-06-20 16:30:29,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493601487] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:30:29,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:30:29,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:30:29,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646624394] [2024-06-20 16:30:29,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:30:29,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:30:29,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:30:29,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:30:29,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:30:29,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-20 16:30:29,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 174 transitions, 1768 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:29,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:30:29,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-20 16:30:29,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:30:31,546 INFO L124 PetriNetUnfolderBase]: 14456/19892 cut-off events. [2024-06-20 16:30:31,546 INFO L125 PetriNetUnfolderBase]: For 204500/204512 co-relation queries the response was YES. [2024-06-20 16:30:31,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106431 conditions, 19892 events. 14456/19892 cut-off events. For 204500/204512 co-relation queries the response was YES. Maximal size of possible extension queue 615. Compared 108970 event pairs, 7355 based on Foata normal form. 22/19896 useless extension candidates. Maximal degree in co-relation 106388. Up to 19283 conditions per place. [2024-06-20 16:30:31,750 INFO L140 encePairwiseOnDemand]: 36/51 looper letters, 192 selfloop transitions, 32 changer transitions 0/229 dead transitions. [2024-06-20 16:30:31,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 229 transitions, 2636 flow [2024-06-20 16:30:31,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:30:31,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:30:31,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-20 16:30:31,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.484593837535014 [2024-06-20 16:30:31,754 INFO L175 Difference]: Start difference. First operand has 103 places, 174 transitions, 1768 flow. Second operand 7 states and 173 transitions. [2024-06-20 16:30:31,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 229 transitions, 2636 flow [2024-06-20 16:30:32,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 229 transitions, 2527 flow, removed 45 selfloop flow, removed 2 redundant places. [2024-06-20 16:30:32,056 INFO L231 Difference]: Finished difference. Result has 111 places, 189 transitions, 1966 flow [2024-06-20 16:30:32,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1668, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1966, PETRI_PLACES=111, PETRI_TRANSITIONS=189} [2024-06-20 16:30:32,057 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 57 predicate places. [2024-06-20 16:30:32,057 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 189 transitions, 1966 flow [2024-06-20 16:30:32,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:32,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:30:32,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:30:32,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-20 16:30:32,058 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-20 16:30:32,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:30:32,058 INFO L85 PathProgramCache]: Analyzing trace with hash -828101532, now seen corresponding path program 4 times [2024-06-20 16:30:32,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:30:32,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503309513] [2024-06-20 16:30:32,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:30:32,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:30:32,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:30:32,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:30:32,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:30:32,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503309513] [2024-06-20 16:30:32,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503309513] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:30:32,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:30:32,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:30:32,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396314288] [2024-06-20 16:30:32,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:30:32,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:30:32,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:30:32,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:30:32,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:30:32,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-20 16:30:32,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 189 transitions, 1966 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:32,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:30:32,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-20 16:30:32,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:30:35,457 INFO L124 PetriNetUnfolderBase]: 14592/20068 cut-off events. [2024-06-20 16:30:35,457 INFO L125 PetriNetUnfolderBase]: For 221281/221293 co-relation queries the response was YES. [2024-06-20 16:30:35,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107556 conditions, 20068 events. 14592/20068 cut-off events. For 221281/221293 co-relation queries the response was YES. Maximal size of possible extension queue 625. Compared 109777 event pairs, 7338 based on Foata normal form. 26/20077 useless extension candidates. Maximal degree in co-relation 107508. Up to 19071 conditions per place. [2024-06-20 16:30:35,665 INFO L140 encePairwiseOnDemand]: 36/51 looper letters, 201 selfloop transitions, 51 changer transitions 0/257 dead transitions. [2024-06-20 16:30:35,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 257 transitions, 3092 flow [2024-06-20 16:30:35,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:30:35,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:30:35,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-20 16:30:35,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49859943977591037 [2024-06-20 16:30:35,667 INFO L175 Difference]: Start difference. First operand has 111 places, 189 transitions, 1966 flow. Second operand 7 states and 178 transitions. [2024-06-20 16:30:35,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 257 transitions, 3092 flow [2024-06-20 16:30:35,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 257 transitions, 2980 flow, removed 34 selfloop flow, removed 3 redundant places. [2024-06-20 16:30:35,898 INFO L231 Difference]: Finished difference. Result has 116 places, 207 transitions, 2280 flow [2024-06-20 16:30:35,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1860, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2280, PETRI_PLACES=116, PETRI_TRANSITIONS=207} [2024-06-20 16:30:35,899 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 62 predicate places. [2024-06-20 16:30:35,899 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 207 transitions, 2280 flow [2024-06-20 16:30:35,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:35,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:30:35,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:30:35,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-20 16:30:35,899 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)] === [2024-06-20 16:30:35,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:30:35,900 INFO L85 PathProgramCache]: Analyzing trace with hash -827855454, now seen corresponding path program 1 times [2024-06-20 16:30:35,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:30:35,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380737107] [2024-06-20 16:30:35,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:30:35,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:30:35,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:30:36,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:30:36,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:30:36,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380737107] [2024-06-20 16:30:36,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380737107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:30:36,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:30:36,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:30:36,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761945205] [2024-06-20 16:30:36,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:30:36,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:30:36,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:30:36,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:30:36,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:30:37,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-20 16:30:37,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 207 transitions, 2280 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:37,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:30:37,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-20 16:30:37,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:30:40,991 INFO L124 PetriNetUnfolderBase]: 14773/20331 cut-off events. [2024-06-20 16:30:40,991 INFO L125 PetriNetUnfolderBase]: For 245412/245430 co-relation queries the response was YES. [2024-06-20 16:30:41,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110998 conditions, 20331 events. 14773/20331 cut-off events. For 245412/245430 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 111758 event pairs, 7243 based on Foata normal form. 30/20341 useless extension candidates. Maximal degree in co-relation 110948. Up to 19477 conditions per place. [2024-06-20 16:30:41,145 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 214 selfloop transitions, 35 changer transitions 0/254 dead transitions. [2024-06-20 16:30:41,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 254 transitions, 3096 flow [2024-06-20 16:30:41,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:30:41,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:30:41,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-06-20 16:30:41,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5042016806722689 [2024-06-20 16:30:41,150 INFO L175 Difference]: Start difference. First operand has 116 places, 207 transitions, 2280 flow. Second operand 7 states and 180 transitions. [2024-06-20 16:30:41,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 254 transitions, 3096 flow [2024-06-20 16:30:41,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 254 transitions, 2993 flow, removed 40 selfloop flow, removed 3 redundant places. [2024-06-20 16:30:41,394 INFO L231 Difference]: Finished difference. Result has 120 places, 210 transitions, 2308 flow [2024-06-20 16:30:41,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2177, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2308, PETRI_PLACES=120, PETRI_TRANSITIONS=210} [2024-06-20 16:30:41,395 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 66 predicate places. [2024-06-20 16:30:41,396 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 210 transitions, 2308 flow [2024-06-20 16:30:41,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:41,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:30:41,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:30:41,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-20 16:30:41,396 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-20 16:30:41,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:30:41,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1320893801, now seen corresponding path program 1 times [2024-06-20 16:30:41,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:30:41,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775213693] [2024-06-20 16:30:41,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:30:41,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:30:41,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:30:42,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:30:42,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:30:42,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775213693] [2024-06-20 16:30:42,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775213693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:30:42,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:30:42,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-20 16:30:42,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932606566] [2024-06-20 16:30:42,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:30:42,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-20 16:30:42,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:30:42,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-20 16:30:42,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-20 16:30:42,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-20 16:30:42,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 210 transitions, 2308 flow. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:42,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:30:42,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-20 16:30:42,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:30:45,154 INFO L124 PetriNetUnfolderBase]: 14759/20315 cut-off events. [2024-06-20 16:30:45,155 INFO L125 PetriNetUnfolderBase]: For 266053/266071 co-relation queries the response was YES. [2024-06-20 16:30:45,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113413 conditions, 20315 events. 14759/20315 cut-off events. For 266053/266071 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 111535 event pairs, 7388 based on Foata normal form. 4/20300 useless extension candidates. Maximal degree in co-relation 113361. Up to 19886 conditions per place. [2024-06-20 16:30:45,463 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 203 selfloop transitions, 15 changer transitions 0/223 dead transitions. [2024-06-20 16:30:45,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 223 transitions, 2790 flow [2024-06-20 16:30:45,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 16:30:45,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 16:30:45,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 127 transitions. [2024-06-20 16:30:45,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4150326797385621 [2024-06-20 16:30:45,465 INFO L175 Difference]: Start difference. First operand has 120 places, 210 transitions, 2308 flow. Second operand 6 states and 127 transitions. [2024-06-20 16:30:45,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 223 transitions, 2790 flow [2024-06-20 16:30:45,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 223 transitions, 2665 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-20 16:30:45,673 INFO L231 Difference]: Finished difference. Result has 121 places, 210 transitions, 2225 flow [2024-06-20 16:30:45,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2183, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2225, PETRI_PLACES=121, PETRI_TRANSITIONS=210} [2024-06-20 16:30:45,674 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 67 predicate places. [2024-06-20 16:30:45,674 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 210 transitions, 2225 flow [2024-06-20 16:30:45,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:45,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:30:45,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:30:45,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-20 16:30:45,675 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)] === [2024-06-20 16:30:45,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:30:45,675 INFO L85 PathProgramCache]: Analyzing trace with hash 165923199, now seen corresponding path program 1 times [2024-06-20 16:30:45,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:30:45,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12818789] [2024-06-20 16:30:45,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:30:45,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:30:45,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:30:46,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:30:46,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:30:46,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12818789] [2024-06-20 16:30:46,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12818789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:30:46,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:30:46,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:30:46,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679706290] [2024-06-20 16:30:46,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:30:46,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:30:46,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:30:46,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:30:46,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:30:46,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-20 16:30:46,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 210 transitions, 2225 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) [2024-06-20 16:30:46,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:30:46,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-20 16:30:46,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:30:49,507 INFO L124 PetriNetUnfolderBase]: 14857/20427 cut-off events. [2024-06-20 16:30:49,507 INFO L125 PetriNetUnfolderBase]: For 277266/277331 co-relation queries the response was YES. [2024-06-20 16:30:49,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114701 conditions, 20427 events. 14857/20427 cut-off events. For 277266/277331 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 110998 event pairs, 5646 based on Foata normal form. 60/20486 useless extension candidates. Maximal degree in co-relation 114648. Up to 19745 conditions per place. [2024-06-20 16:30:49,710 INFO L140 encePairwiseOnDemand]: 36/51 looper letters, 207 selfloop transitions, 56 changer transitions 0/268 dead transitions. [2024-06-20 16:30:49,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 268 transitions, 3155 flow [2024-06-20 16:30:49,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:30:49,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:30:49,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-20 16:30:49,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4852941176470588 [2024-06-20 16:30:49,712 INFO L175 Difference]: Start difference. First operand has 121 places, 210 transitions, 2225 flow. Second operand 8 states and 198 transitions. [2024-06-20 16:30:49,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 268 transitions, 3155 flow [2024-06-20 16:30:49,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 268 transitions, 3102 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-20 16:30:49,928 INFO L231 Difference]: Finished difference. Result has 125 places, 223 transitions, 2467 flow [2024-06-20 16:30:49,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2172, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2467, PETRI_PLACES=125, PETRI_TRANSITIONS=223} [2024-06-20 16:30:49,929 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 71 predicate places. [2024-06-20 16:30:49,929 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 223 transitions, 2467 flow [2024-06-20 16:30:49,929 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) [2024-06-20 16:30:49,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:30:49,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:30:49,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-20 16:30:49,930 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-20 16:30:49,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:30:49,930 INFO L85 PathProgramCache]: Analyzing trace with hash -580926275, now seen corresponding path program 2 times [2024-06-20 16:30:49,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:30:49,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626854598] [2024-06-20 16:30:49,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:30:49,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:30:50,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:30:50,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:30:50,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:30:50,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626854598] [2024-06-20 16:30:50,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626854598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:30:50,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:30:50,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:30:50,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559831272] [2024-06-20 16:30:50,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:30:50,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:30:50,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:30:50,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:30:50,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:30:51,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-20 16:30:51,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 223 transitions, 2467 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) [2024-06-20 16:30:51,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:30:51,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-20 16:30:51,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:30:54,153 INFO L124 PetriNetUnfolderBase]: 14873/20444 cut-off events. [2024-06-20 16:30:54,154 INFO L125 PetriNetUnfolderBase]: For 312634/312689 co-relation queries the response was YES. [2024-06-20 16:30:54,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119198 conditions, 20444 events. 14873/20444 cut-off events. For 312634/312689 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 110779 event pairs, 5632 based on Foata normal form. 46/20489 useless extension candidates. Maximal degree in co-relation 119143. Up to 19822 conditions per place. [2024-06-20 16:30:54,343 INFO L140 encePairwiseOnDemand]: 35/51 looper letters, 213 selfloop transitions, 50 changer transitions 0/268 dead transitions. [2024-06-20 16:30:54,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 268 transitions, 3229 flow [2024-06-20 16:30:54,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:30:54,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:30:54,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-20 16:30:54,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47549019607843135 [2024-06-20 16:30:54,345 INFO L175 Difference]: Start difference. First operand has 125 places, 223 transitions, 2467 flow. Second operand 8 states and 194 transitions. [2024-06-20 16:30:54,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 268 transitions, 3229 flow [2024-06-20 16:30:54,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 268 transitions, 3095 flow, removed 42 selfloop flow, removed 4 redundant places. [2024-06-20 16:30:54,730 INFO L231 Difference]: Finished difference. Result has 129 places, 227 transitions, 2524 flow [2024-06-20 16:30:54,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2349, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2524, PETRI_PLACES=129, PETRI_TRANSITIONS=227} [2024-06-20 16:30:54,731 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 75 predicate places. [2024-06-20 16:30:54,731 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 227 transitions, 2524 flow [2024-06-20 16:30:54,731 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) [2024-06-20 16:30:54,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:30:54,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:30:54,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-20 16:30:54,732 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-20 16:30:54,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:30:54,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1378645817, now seen corresponding path program 3 times [2024-06-20 16:30:54,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:30:54,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727402514] [2024-06-20 16:30:54,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:30:54,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:30:54,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:30:55,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:30:55,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:30:55,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727402514] [2024-06-20 16:30:55,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727402514] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:30:55,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:30:55,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 16:30:55,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441809845] [2024-06-20 16:30:55,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:30:55,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 16:30:55,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:30:55,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 16:30:55,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-20 16:30:55,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-20 16:30:55,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 227 transitions, 2524 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:30:55,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:30:55,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-20 16:30:55,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand