./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix020.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/protection/mix020.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b44c8288 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/mix020.oepc.i ./goblint.2024-05-07_14-17-48.files/protection/mix020.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 --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.witness-ghost-b44c828-m [2024-05-12 13:12:23,800 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 13:12:23,857 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 13:12:23,862 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 13:12:23,863 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 13:12:23,889 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 13:12:23,889 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 13:12:23,890 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 13:12:23,890 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 13:12:23,890 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 13:12:23,890 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 13:12:23,891 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 13:12:23,891 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 13:12:23,891 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 13:12:23,891 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 13:12:23,892 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 13:12:23,894 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 13:12:23,896 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 13:12:23,897 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 13:12:23,897 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 13:12:23,897 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 13:12:23,898 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 13:12:23,898 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 13:12:23,898 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 13:12:23,898 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 13:12:23,898 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 13:12:23,899 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 13:12:23,899 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 13:12:23,899 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 13:12:23,899 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 13:12:23,900 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 13:12:23,900 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 13:12:23,900 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:12:23,900 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 13:12:23,900 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 13:12:23,901 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 13:12:23,901 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 13:12:23,901 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 13:12:23,901 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 13:12:23,901 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 13:12:23,901 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 13:12:23,902 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 13:12:23,902 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 13:12:23,902 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 13:12:24,134 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 13:12:24,154 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 13:12:24,156 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 13:12:24,157 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 13:12:24,158 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 13:12:24,159 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/protection/mix020.oepc.yml/witness.yml [2024-05-12 13:12:24,349 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 13:12:24,349 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 13:12:24,350 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix020.oepc.i [2024-05-12 13:12:25,437 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 13:12:25,674 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 13:12:25,675 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix020.oepc.i [2024-05-12 13:12:25,686 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf92f9648/cfb5563d305e45cebff73fcb97b55885/FLAGb9f2f5595 [2024-05-12 13:12:25,699 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf92f9648/cfb5563d305e45cebff73fcb97b55885 [2024-05-12 13:12:25,700 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 13:12:25,701 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 13:12:25,705 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 13:12:25,705 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 13:12:25,709 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 13:12:25,709 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:12:24" (1/2) ... [2024-05-12 13:12:25,710 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78ef7609 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:12:25, skipping insertion in model container [2024-05-12 13:12:25,710 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:12:24" (1/2) ... [2024-05-12 13:12:25,712 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@21b2f180 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:12:25, skipping insertion in model container [2024-05-12 13:12:25,712 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:12:25" (2/2) ... [2024-05-12 13:12:25,712 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78ef7609 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:12:25, skipping insertion in model container [2024-05-12 13:12:25,712 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:12:25" (2/2) ... [2024-05-12 13:12:25,713 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 13:12:25,819 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 13:12:25,820 INFO L97 edCorrectnessWitness]: Location invariant before [L873-L873] ((((((((((((((((((((((! multithreaded || ((0 <= a$w_buff1 && a$w_buff1 <= 1) && (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || ((0 <= a$mem_tmp && a$mem_tmp <= 1) && (a$mem_tmp == 0 || a$mem_tmp == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((0 <= a$w_buff0 && a$w_buff0 <= 1) && (a$w_buff0 == 0 || a$w_buff0 == 1)))) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0) [2024-05-12 13:12:25,820 INFO L97 edCorrectnessWitness]: Location invariant before [L869-L869] ((((((((((((((((((((((! multithreaded || ((0 <= a$w_buff1 && a$w_buff1 <= 1) && (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || ((0 <= a$mem_tmp && a$mem_tmp <= 1) && (a$mem_tmp == 0 || a$mem_tmp == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((0 <= a$w_buff0 && a$w_buff0 <= 1) && (a$w_buff0 == 0 || a$w_buff0 == 1)))) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0) [2024-05-12 13:12:25,820 INFO L97 edCorrectnessWitness]: Location invariant before [L874-L874] ((((((((((((((((((((((! multithreaded || ((0 <= a$w_buff1 && a$w_buff1 <= 1) && (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || ((0 <= a$mem_tmp && a$mem_tmp <= 1) && (a$mem_tmp == 0 || a$mem_tmp == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((0 <= a$w_buff0 && a$w_buff0 <= 1) && (a$w_buff0 == 0 || a$w_buff0 == 1)))) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0) [2024-05-12 13:12:25,820 INFO L97 edCorrectnessWitness]: Location invariant before [L871-L871] ((((((((((((((((((((((! multithreaded || ((0 <= a$w_buff1 && a$w_buff1 <= 1) && (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || ((0 <= a$mem_tmp && a$mem_tmp <= 1) && (a$mem_tmp == 0 || a$mem_tmp == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((0 <= a$w_buff0 && a$w_buff0 <= 1) && (a$w_buff0 == 0 || a$w_buff0 == 1)))) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0) [2024-05-12 13:12:25,821 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 13:12:25,821 INFO L106 edCorrectnessWitness]: ghost_update [L867-L867] multithreaded = 1; [2024-05-12 13:12:25,857 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 13:12:26,008 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix020.oepc.i[945,958] [2024-05-12 13:12:26,238 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:12:26,250 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-05-12 13:12:26,280 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix020.oepc.i[945,958] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 13:12:26,386 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:12:26,413 INFO L206 MainTranslator]: Completed translation [2024-05-12 13:12:26,413 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:12:26 WrapperNode [2024-05-12 13:12:26,414 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 13:12:26,414 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 13:12:26,414 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 13:12:26,415 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 13:12:26,420 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:12:26" (1/1) ... [2024-05-12 13:12:26,434 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:12:26" (1/1) ... [2024-05-12 13:12:26,462 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 151 [2024-05-12 13:12:26,462 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 13:12:26,463 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 13:12:26,463 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 13:12:26,463 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 13:12:26,485 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:12:26" (1/1) ... [2024-05-12 13:12:26,492 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:12:26" (1/1) ... [2024-05-12 13:12:26,496 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:12:26" (1/1) ... [2024-05-12 13:12:26,539 INFO L175 MemorySlicer]: Split 6 memory accesses to 5 slices as follows [2, 1, 1, 1, 1]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2024-05-12 13:12:26,539 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:12:26" (1/1) ... [2024-05-12 13:12:26,539 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:12:26" (1/1) ... [2024-05-12 13:12:26,551 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:12:26" (1/1) ... [2024-05-12 13:12:26,552 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:12:26" (1/1) ... [2024-05-12 13:12:26,554 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:12:26" (1/1) ... [2024-05-12 13:12:26,556 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:12:26" (1/1) ... [2024-05-12 13:12:26,560 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 13:12:26,560 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 13:12:26,561 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 13:12:26,561 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 13:12:26,561 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:12:26" (1/1) ... [2024-05-12 13:12:26,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:12:26,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 13:12:26,586 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) [2024-05-12 13:12:26,593 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 [2024-05-12 13:12:26,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 13:12:26,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 13:12:26,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 13:12:26,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-05-12 13:12:26,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-05-12 13:12:26,617 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-05-12 13:12:26,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 13:12:26,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 13:12:26,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 13:12:26,618 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-05-12 13:12:26,618 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-05-12 13:12:26,619 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-05-12 13:12:26,619 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-05-12 13:12:26,621 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-05-12 13:12:26,621 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-05-12 13:12:26,621 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-05-12 13:12:26,621 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-05-12 13:12:26,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 13:12:26,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 13:12:26,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 13:12:26,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-05-12 13:12:26,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-05-12 13:12:26,622 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-05-12 13:12:26,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 13:12:26,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 13:12:26,623 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-05-12 13:12:26,773 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 13:12:26,778 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 13:12:27,114 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 13:12:27,114 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 13:12:27,230 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 13:12:27,230 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-05-12 13:12:27,231 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:12:27 BoogieIcfgContainer [2024-05-12 13:12:27,231 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 13:12:27,232 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 13:12:27,232 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 13:12:27,235 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 13:12:27,235 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:12:24" (1/4) ... [2024-05-12 13:12:27,236 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b5fc689 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 01:12:27, skipping insertion in model container [2024-05-12 13:12:27,236 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 01:12:25" (2/4) ... [2024-05-12 13:12:27,236 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b5fc689 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 01:12:27, skipping insertion in model container [2024-05-12 13:12:27,236 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:12:26" (3/4) ... [2024-05-12 13:12:27,236 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b5fc689 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 01:12:27, skipping insertion in model container [2024-05-12 13:12:27,236 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:12:27" (4/4) ... [2024-05-12 13:12:27,237 INFO L112 eAbstractionObserver]: Analyzing ICFG mix020.oepc.i [2024-05-12 13:12:27,251 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 13:12:27,251 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-05-12 13:12:27,252 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 13:12:27,388 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-05-12 13:12:27,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 59 transitions, 134 flow [2024-05-12 13:12:27,465 INFO L124 PetriNetUnfolderBase]: 1/55 cut-off events. [2024-05-12 13:12:27,465 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:12:27,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 55 events. 1/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 97 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2024-05-12 13:12:27,470 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 59 transitions, 134 flow [2024-05-12 13:12:27,474 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 55 transitions, 122 flow [2024-05-12 13:12:27,487 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 13:12:27,492 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;@6ffc02ff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 13:12:27,492 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-05-12 13:12:27,495 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 13:12:27,496 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-05-12 13:12:27,496 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:12:27,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:12:27,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 13:12:27,499 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:12:27,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:12:27,503 INFO L85 PathProgramCache]: Analyzing trace with hash -531838091, now seen corresponding path program 1 times [2024-05-12 13:12:27,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:12:27,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483902569] [2024-05-12 13:12:27,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:12:27,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:12:27,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:12:28,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:12:28,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:12:28,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483902569] [2024-05-12 13:12:28,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483902569] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:12:28,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:12:28,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 13:12:28,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564702523] [2024-05-12 13:12:28,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:12:28,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 13:12:28,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:12:28,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 13:12:28,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 13:12:28,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 59 [2024-05-12 13:12:28,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 55 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 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) [2024-05-12 13:12:28,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:12:28,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 59 [2024-05-12 13:12:28,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:12:32,207 INFO L124 PetriNetUnfolderBase]: 25891/38476 cut-off events. [2024-05-12 13:12:32,207 INFO L125 PetriNetUnfolderBase]: For 219/219 co-relation queries the response was YES. [2024-05-12 13:12:32,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73266 conditions, 38476 events. 25891/38476 cut-off events. For 219/219 co-relation queries the response was YES. Maximal size of possible extension queue 1409. Compared 273940 event pairs, 21103 based on Foata normal form. 901/36546 useless extension candidates. Maximal degree in co-relation 73250. Up to 34321 conditions per place. [2024-05-12 13:12:32,452 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 54 selfloop transitions, 6 changer transitions 0/73 dead transitions. [2024-05-12 13:12:32,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 73 transitions, 287 flow [2024-05-12 13:12:32,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 13:12:32,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 13:12:32,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2024-05-12 13:12:32,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6610169491525424 [2024-05-12 13:12:32,463 INFO L175 Difference]: Start difference. First operand has 67 places, 55 transitions, 122 flow. Second operand 3 states and 117 transitions. [2024-05-12 13:12:32,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 73 transitions, 287 flow [2024-05-12 13:12:32,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 73 transitions, 280 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-05-12 13:12:32,467 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 162 flow [2024-05-12 13:12:32,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=66, PETRI_TRANSITIONS=59} [2024-05-12 13:12:32,472 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -1 predicate places. [2024-05-12 13:12:32,472 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 162 flow [2024-05-12 13:12:32,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 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) [2024-05-12 13:12:32,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:12:32,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 13:12:32,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 13:12:32,473 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:12:32,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:12:32,473 INFO L85 PathProgramCache]: Analyzing trace with hash -531837275, now seen corresponding path program 1 times [2024-05-12 13:12:32,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:12:32,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961003756] [2024-05-12 13:12:32,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:12:32,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:12:32,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:12:32,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:12:32,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:12:32,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961003756] [2024-05-12 13:12:32,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961003756] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:12:32,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:12:32,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 13:12:32,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872234155] [2024-05-12 13:12:32,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:12:32,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 13:12:32,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:12:32,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 13:12:32,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 13:12:32,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 59 [2024-05-12 13:12:32,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 59 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:12:32,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:12:32,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 59 [2024-05-12 13:12:32,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:12:33,566 INFO L124 PetriNetUnfolderBase]: 5199/9206 cut-off events. [2024-05-12 13:12:33,567 INFO L125 PetriNetUnfolderBase]: For 694/694 co-relation queries the response was YES. [2024-05-12 13:12:33,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17482 conditions, 9206 events. 5199/9206 cut-off events. For 694/694 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 73481 event pairs, 3384 based on Foata normal form. 0/8450 useless extension candidates. Maximal degree in co-relation 17467. Up to 6056 conditions per place. [2024-05-12 13:12:33,629 INFO L140 encePairwiseOnDemand]: 56/59 looper letters, 47 selfloop transitions, 3 changer transitions 0/78 dead transitions. [2024-05-12 13:12:33,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 78 transitions, 301 flow [2024-05-12 13:12:33,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 13:12:33,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 13:12:33,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 137 transitions. [2024-05-12 13:12:33,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7740112994350282 [2024-05-12 13:12:33,642 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 162 flow. Second operand 3 states and 137 transitions. [2024-05-12 13:12:33,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 78 transitions, 301 flow [2024-05-12 13:12:33,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 78 transitions, 296 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 13:12:33,645 INFO L231 Difference]: Finished difference. Result has 66 places, 57 transitions, 154 flow [2024-05-12 13:12:33,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=66, PETRI_TRANSITIONS=57} [2024-05-12 13:12:33,646 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -1 predicate places. [2024-05-12 13:12:33,646 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 57 transitions, 154 flow [2024-05-12 13:12:33,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:12:33,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:12:33,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:12:33,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 13:12:33,647 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:12:33,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:12:33,648 INFO L85 PathProgramCache]: Analyzing trace with hash 4754355, now seen corresponding path program 1 times [2024-05-12 13:12:33,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:12:33,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066928953] [2024-05-12 13:12:33,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:12:33,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:12:33,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:12:34,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:12:34,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:12:34,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066928953] [2024-05-12 13:12:34,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066928953] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:12:34,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:12:34,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 13:12:34,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125749111] [2024-05-12 13:12:34,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:12:34,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 13:12:34,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:12:34,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 13:12:34,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-05-12 13:12:34,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 59 [2024-05-12 13:12:34,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 57 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 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) [2024-05-12 13:12:34,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:12:34,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 59 [2024-05-12 13:12:34,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:12:36,916 INFO L124 PetriNetUnfolderBase]: 21344/31430 cut-off events. [2024-05-12 13:12:36,917 INFO L125 PetriNetUnfolderBase]: For 7511/7511 co-relation queries the response was YES. [2024-05-12 13:12:37,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67672 conditions, 31430 events. 21344/31430 cut-off events. For 7511/7511 co-relation queries the response was YES. Maximal size of possible extension queue 1148. Compared 214120 event pairs, 14966 based on Foata normal form. 4/30382 useless extension candidates. Maximal degree in co-relation 67656. Up to 28342 conditions per place. [2024-05-12 13:12:37,103 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 66 selfloop transitions, 10 changer transitions 2/91 dead transitions. [2024-05-12 13:12:37,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 91 transitions, 406 flow [2024-05-12 13:12:37,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 13:12:37,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 13:12:37,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 146 transitions. [2024-05-12 13:12:37,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6186440677966102 [2024-05-12 13:12:37,105 INFO L175 Difference]: Start difference. First operand has 66 places, 57 transitions, 154 flow. Second operand 4 states and 146 transitions. [2024-05-12 13:12:37,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 91 transitions, 406 flow [2024-05-12 13:12:37,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 91 transitions, 398 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 13:12:37,108 INFO L231 Difference]: Finished difference. Result has 69 places, 65 transitions, 235 flow [2024-05-12 13:12:37,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=235, PETRI_PLACES=69, PETRI_TRANSITIONS=65} [2024-05-12 13:12:37,108 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 2 predicate places. [2024-05-12 13:12:37,109 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 65 transitions, 235 flow [2024-05-12 13:12:37,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 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) [2024-05-12 13:12:37,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:12:37,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:12:37,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 13:12:37,109 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:12:37,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:12:37,110 INFO L85 PathProgramCache]: Analyzing trace with hash 274022386, now seen corresponding path program 1 times [2024-05-12 13:12:37,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:12:37,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760441434] [2024-05-12 13:12:37,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:12:37,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:12:37,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:12:38,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:12:38,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:12:38,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760441434] [2024-05-12 13:12:38,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760441434] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:12:38,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:12:38,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:12:38,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827951680] [2024-05-12 13:12:38,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:12:38,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:12:38,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:12:38,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:12:38,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:12:38,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-05-12 13:12:38,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 65 transitions, 235 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 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) [2024-05-12 13:12:38,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:12:38,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-05-12 13:12:38,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:12:41,949 INFO L124 PetriNetUnfolderBase]: 22322/33279 cut-off events. [2024-05-12 13:12:41,949 INFO L125 PetriNetUnfolderBase]: For 14876/14876 co-relation queries the response was YES. [2024-05-12 13:12:42,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77101 conditions, 33279 events. 22322/33279 cut-off events. For 14876/14876 co-relation queries the response was YES. Maximal size of possible extension queue 1252. Compared 232298 event pairs, 13038 based on Foata normal form. 4/32211 useless extension candidates. Maximal degree in co-relation 77083. Up to 29590 conditions per place. [2024-05-12 13:12:42,130 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 93 selfloop transitions, 18 changer transitions 0/123 dead transitions. [2024-05-12 13:12:42,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 123 transitions, 630 flow [2024-05-12 13:12:42,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:12:42,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:12:42,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 207 transitions. [2024-05-12 13:12:42,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5847457627118644 [2024-05-12 13:12:42,132 INFO L175 Difference]: Start difference. First operand has 69 places, 65 transitions, 235 flow. Second operand 6 states and 207 transitions. [2024-05-12 13:12:42,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 123 transitions, 630 flow [2024-05-12 13:12:42,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 123 transitions, 606 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-05-12 13:12:42,139 INFO L231 Difference]: Finished difference. Result has 74 places, 73 transitions, 318 flow [2024-05-12 13:12:42,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=318, PETRI_PLACES=74, PETRI_TRANSITIONS=73} [2024-05-12 13:12:42,141 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 7 predicate places. [2024-05-12 13:12:42,141 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 73 transitions, 318 flow [2024-05-12 13:12:42,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 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) [2024-05-12 13:12:42,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:12:42,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:12:42,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 13:12:42,142 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:12:42,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:12:42,142 INFO L85 PathProgramCache]: Analyzing trace with hash -95238861, now seen corresponding path program 1 times [2024-05-12 13:12:42,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:12:42,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566944152] [2024-05-12 13:12:42,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:12:42,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:12:42,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:12:43,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:12:43,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:12:43,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566944152] [2024-05-12 13:12:43,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566944152] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:12:43,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:12:43,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:12:43,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326384620] [2024-05-12 13:12:43,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:12:43,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:12:43,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:12:43,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:12:43,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:12:43,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-05-12 13:12:43,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 73 transitions, 318 flow. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 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) [2024-05-12 13:12:43,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:12:43,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-05-12 13:12:43,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:12:46,506 INFO L124 PetriNetUnfolderBase]: 22318/33264 cut-off events. [2024-05-12 13:12:46,506 INFO L125 PetriNetUnfolderBase]: For 29005/29005 co-relation queries the response was YES. [2024-05-12 13:12:46,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84501 conditions, 33264 events. 22318/33264 cut-off events. For 29005/29005 co-relation queries the response was YES. Maximal size of possible extension queue 1251. Compared 232087 event pairs, 11203 based on Foata normal form. 8/32208 useless extension candidates. Maximal degree in co-relation 84480. Up to 29528 conditions per place. [2024-05-12 13:12:46,836 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 103 selfloop transitions, 21 changer transitions 0/136 dead transitions. [2024-05-12 13:12:46,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 136 transitions, 740 flow [2024-05-12 13:12:46,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:12:46,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:12:46,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 236 transitions. [2024-05-12 13:12:46,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-05-12 13:12:46,837 INFO L175 Difference]: Start difference. First operand has 74 places, 73 transitions, 318 flow. Second operand 7 states and 236 transitions. [2024-05-12 13:12:46,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 136 transitions, 740 flow [2024-05-12 13:12:46,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 136 transitions, 699 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-05-12 13:12:46,847 INFO L231 Difference]: Finished difference. Result has 77 places, 75 transitions, 351 flow [2024-05-12 13:12:46,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=351, PETRI_PLACES=77, PETRI_TRANSITIONS=75} [2024-05-12 13:12:46,849 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 10 predicate places. [2024-05-12 13:12:46,849 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 75 transitions, 351 flow [2024-05-12 13:12:46,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 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) [2024-05-12 13:12:46,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:12:46,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:12:46,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 13:12:46,850 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:12:46,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:12:46,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1183071541, now seen corresponding path program 1 times [2024-05-12 13:12:46,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:12:46,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720770681] [2024-05-12 13:12:46,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:12:46,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:12:46,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:12:47,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:12:47,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:12:47,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720770681] [2024-05-12 13:12:47,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720770681] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:12:47,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:12:47,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:12:47,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304380961] [2024-05-12 13:12:47,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:12:47,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:12:47,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:12:47,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:12:47,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:12:47,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2024-05-12 13:12:47,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 75 transitions, 351 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 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) [2024-05-12 13:12:47,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:12:47,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2024-05-12 13:12:47,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:12:51,317 INFO L124 PetriNetUnfolderBase]: 25873/38728 cut-off events. [2024-05-12 13:12:51,317 INFO L125 PetriNetUnfolderBase]: For 50620/50620 co-relation queries the response was YES. [2024-05-12 13:12:51,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102539 conditions, 38728 events. 25873/38728 cut-off events. For 50620/50620 co-relation queries the response was YES. Maximal size of possible extension queue 1366. Compared 275507 event pairs, 14622 based on Foata normal form. 3/37697 useless extension candidates. Maximal degree in co-relation 102517. Up to 34267 conditions per place. [2024-05-12 13:12:51,562 INFO L140 encePairwiseOnDemand]: 49/59 looper letters, 78 selfloop transitions, 14 changer transitions 0/103 dead transitions. [2024-05-12 13:12:51,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 103 transitions, 621 flow [2024-05-12 13:12:51,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:12:51,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:12:51,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 151 transitions. [2024-05-12 13:12:51,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.511864406779661 [2024-05-12 13:12:51,564 INFO L175 Difference]: Start difference. First operand has 77 places, 75 transitions, 351 flow. Second operand 5 states and 151 transitions. [2024-05-12 13:12:51,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 103 transitions, 621 flow [2024-05-12 13:12:51,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 103 transitions, 565 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-05-12 13:12:51,574 INFO L231 Difference]: Finished difference. Result has 77 places, 79 transitions, 369 flow [2024-05-12 13:12:51,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=369, PETRI_PLACES=77, PETRI_TRANSITIONS=79} [2024-05-12 13:12:51,577 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 10 predicate places. [2024-05-12 13:12:51,577 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 79 transitions, 369 flow [2024-05-12 13:12:51,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 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) [2024-05-12 13:12:51,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:12:51,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:12:51,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 13:12:51,578 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:12:51,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:12:51,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1935696802, now seen corresponding path program 1 times [2024-05-12 13:12:51,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:12:51,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143267652] [2024-05-12 13:12:51,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:12:51,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:12:51,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:12:52,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:12:52,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:12:52,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143267652] [2024-05-12 13:12:52,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143267652] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:12:52,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:12:52,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:12:52,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965653500] [2024-05-12 13:12:52,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:12:52,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:12:52,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:12:52,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:12:52,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:12:52,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2024-05-12 13:12:52,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 79 transitions, 369 flow. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 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) [2024-05-12 13:12:52,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:12:52,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2024-05-12 13:12:52,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:12:56,765 INFO L124 PetriNetUnfolderBase]: 26003/39141 cut-off events. [2024-05-12 13:12:56,765 INFO L125 PetriNetUnfolderBase]: For 70902/70902 co-relation queries the response was YES. [2024-05-12 13:12:56,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109896 conditions, 39141 events. 26003/39141 cut-off events. For 70902/70902 co-relation queries the response was YES. Maximal size of possible extension queue 1382. Compared 280054 event pairs, 13917 based on Foata normal form. 14/38252 useless extension candidates. Maximal degree in co-relation 109872. Up to 34087 conditions per place. [2024-05-12 13:12:57,024 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 102 selfloop transitions, 25 changer transitions 0/138 dead transitions. [2024-05-12 13:12:57,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 138 transitions, 863 flow [2024-05-12 13:12:57,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:12:57,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:12:57,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 194 transitions. [2024-05-12 13:12:57,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5480225988700564 [2024-05-12 13:12:57,026 INFO L175 Difference]: Start difference. First operand has 77 places, 79 transitions, 369 flow. Second operand 6 states and 194 transitions. [2024-05-12 13:12:57,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 138 transitions, 863 flow [2024-05-12 13:12:57,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 138 transitions, 823 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-05-12 13:12:57,042 INFO L231 Difference]: Finished difference. Result has 82 places, 93 transitions, 519 flow [2024-05-12 13:12:57,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=519, PETRI_PLACES=82, PETRI_TRANSITIONS=93} [2024-05-12 13:12:57,044 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 15 predicate places. [2024-05-12 13:12:57,044 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 93 transitions, 519 flow [2024-05-12 13:12:57,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 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) [2024-05-12 13:12:57,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:12:57,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:12:57,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-05-12 13:12:57,045 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:12:57,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:12:57,045 INFO L85 PathProgramCache]: Analyzing trace with hash -129584949, now seen corresponding path program 1 times [2024-05-12 13:12:57,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:12:57,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764448985] [2024-05-12 13:12:57,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:12:57,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:12:57,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:12:58,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:12:58,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:12:58,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764448985] [2024-05-12 13:12:58,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764448985] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:12:58,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:12:58,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:12:58,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972110968] [2024-05-12 13:12:58,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:12:58,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:12:58,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:12:58,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:12:58,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:12:58,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2024-05-12 13:12:58,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 93 transitions, 519 flow. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 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) [2024-05-12 13:12:58,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:12:58,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2024-05-12 13:12:58,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:02,184 INFO L124 PetriNetUnfolderBase]: 26048/38698 cut-off events. [2024-05-12 13:13:02,184 INFO L125 PetriNetUnfolderBase]: For 102909/102919 co-relation queries the response was YES. [2024-05-12 13:13:02,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121424 conditions, 38698 events. 26048/38698 cut-off events. For 102909/102919 co-relation queries the response was YES. Maximal size of possible extension queue 1343. Compared 269313 event pairs, 13116 based on Foata normal form. 11/37802 useless extension candidates. Maximal degree in co-relation 121397. Up to 34426 conditions per place. [2024-05-12 13:13:02,450 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 112 selfloop transitions, 23 changer transitions 0/146 dead transitions. [2024-05-12 13:13:02,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 146 transitions, 1031 flow [2024-05-12 13:13:02,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:13:02,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:13:02,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2024-05-12 13:13:02,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5310734463276836 [2024-05-12 13:13:02,452 INFO L175 Difference]: Start difference. First operand has 82 places, 93 transitions, 519 flow. Second operand 6 states and 188 transitions. [2024-05-12 13:13:02,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 146 transitions, 1031 flow [2024-05-12 13:13:02,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 146 transitions, 1005 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-05-12 13:13:02,481 INFO L231 Difference]: Finished difference. Result has 88 places, 106 transitions, 684 flow [2024-05-12 13:13:02,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=684, PETRI_PLACES=88, PETRI_TRANSITIONS=106} [2024-05-12 13:13:02,481 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 21 predicate places. [2024-05-12 13:13:02,481 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 106 transitions, 684 flow [2024-05-12 13:13:02,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 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) [2024-05-12 13:13:02,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:02,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:02,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-05-12 13:13:02,482 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:13:02,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:02,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1280524761, now seen corresponding path program 2 times [2024-05-12 13:13:02,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:02,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466550893] [2024-05-12 13:13:02,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:02,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:02,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:03,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:03,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:03,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466550893] [2024-05-12 13:13:03,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466550893] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:03,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:03,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:13:03,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18437977] [2024-05-12 13:13:03,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:03,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:13:03,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:03,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:13:03,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:13:03,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2024-05-12 13:13:03,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 106 transitions, 684 flow. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 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) [2024-05-12 13:13:03,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:03,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2024-05-12 13:13:03,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand