./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix007.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/mix007.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de 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/mix007.opt.i ./goblint.2024-06-19_11-23-25.files/protection/mix007.opt.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-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 18:14:39,822 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:14:39,909 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:14:39,914 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:14:39,915 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:14:39,944 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:14:39,945 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:14:39,945 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:14:39,946 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:14:39,950 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:14:39,950 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:14:39,950 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:14:39,951 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:14:39,953 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:14:39,953 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:14:39,953 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:14:39,953 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:14:39,954 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:14:39,954 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:14:39,954 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:14:39,955 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:14:39,955 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:14:39,955 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:14:39,956 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:14:39,956 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:14:39,956 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:14:39,956 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:14:39,957 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:14:39,957 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:14:39,958 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:14:39,959 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:14:39,959 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:14:39,959 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:14:39,959 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:14:39,960 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:14:39,960 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:14:39,960 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:14:39,960 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:14:39,961 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:14:39,961 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:14:39,961 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:14:39,961 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:14:39,962 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:14:39,962 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:14:40,283 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:14:40,301 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:14:40,303 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:14:40,304 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:14:40,305 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:14:40,306 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix007.opt.yml/witness.yml [2024-06-27 18:14:40,512 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:14:40,513 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:14:40,513 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix007.opt.i [2024-06-27 18:14:41,808 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:14:42,043 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:14:42,044 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix007.opt.i [2024-06-27 18:14:42,059 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f90ff720/610c5d5f33d7476f96b9a66162f1e802/FLAG6931cce16 [2024-06-27 18:14:42,075 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f90ff720/610c5d5f33d7476f96b9a66162f1e802 [2024-06-27 18:14:42,075 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:14:42,077 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:14:42,078 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:14:42,078 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:14:42,082 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:14:42,083 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:14:40" (1/2) ... [2024-06-27 18:14:42,084 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22606bc9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:14:42, skipping insertion in model container [2024-06-27 18:14:42,084 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:14:40" (1/2) ... [2024-06-27 18:14:42,085 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6c0134cd and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:14:42, skipping insertion in model container [2024-06-27 18:14:42,085 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:14:42" (2/2) ... [2024-06-27 18:14:42,086 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22606bc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:14:42, skipping insertion in model container [2024-06-27 18:14:42,086 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:14:42" (2/2) ... [2024-06-27 18:14:42,086 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:14:42,228 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:14:42,229 INFO L97 edCorrectnessWitness]: Location invariant before [L874-L874] (((((((((((((((((((((((! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1)) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) [2024-06-27 18:14:42,229 INFO L97 edCorrectnessWitness]: Location invariant before [L876-L876] (((((((((((((((((((((((! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1)) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) [2024-06-27 18:14:42,230 INFO L97 edCorrectnessWitness]: Location invariant before [L877-L877] (((((((((((((((((((((((! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1)) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) [2024-06-27 18:14:42,230 INFO L97 edCorrectnessWitness]: Location invariant before [L872-L872] (((((((((((((((((((((((! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1)) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) [2024-06-27 18:14:42,231 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:14:42,231 INFO L106 edCorrectnessWitness]: ghost_update [L870-L870] multithreaded = 1; [2024-06-27 18:14:42,282 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:14:42,466 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix007.opt.i[944,957] [2024-06-27 18:14:42,749 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:14:42,760 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:14:42,799 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix007.opt.i[944,957] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:14:42,923 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:14:42,958 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:14:42,959 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:14:42 WrapperNode [2024-06-27 18:14:42,959 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:14:42,960 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:14:42,960 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:14:42,960 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:14:42,965 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:14:42" (1/1) ... [2024-06-27 18:14:42,982 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:14:42" (1/1) ... [2024-06-27 18:14:43,023 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 158 [2024-06-27 18:14:43,024 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:14:43,025 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:14:43,025 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:14:43,025 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:14:43,035 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:14:42" (1/1) ... [2024-06-27 18:14:43,036 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:14:42" (1/1) ... [2024-06-27 18:14:43,040 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:14:42" (1/1) ... [2024-06-27 18:14:43,057 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 18:14:43,060 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:14:42" (1/1) ... [2024-06-27 18:14:43,065 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:14:42" (1/1) ... [2024-06-27 18:14:43,076 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:14:42" (1/1) ... [2024-06-27 18:14:43,078 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:14:42" (1/1) ... [2024-06-27 18:14:43,083 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:14:42" (1/1) ... [2024-06-27 18:14:43,089 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:14:42" (1/1) ... [2024-06-27 18:14:43,093 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:14:43,098 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:14:43,098 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:14:43,098 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:14:43,099 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:14:42" (1/1) ... [2024-06-27 18:14:43,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:14:43,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:14:43,134 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 18:14:43,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 18:14:43,177 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:14:43,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:14:43,198 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:14:43,198 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:14:43,198 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:14:43,214 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:14:43,214 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 18:14:43,215 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 18:14:43,215 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-27 18:14:43,216 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-27 18:14:43,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:14:43,216 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:14:43,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:14:43,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:14:43,220 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 18:14:43,400 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:14:43,402 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:14:43,861 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:14:43,861 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:14:44,090 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:14:44,090 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:14:44,091 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:14:44 BoogieIcfgContainer [2024-06-27 18:14:44,091 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:14:44,095 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:14:44,095 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:14:44,098 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:14:44,098 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:14:40" (1/4) ... [2024-06-27 18:14:44,099 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@646461bd and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:14:44, skipping insertion in model container [2024-06-27 18:14:44,099 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:14:42" (2/4) ... [2024-06-27 18:14:44,104 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@646461bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:14:44, skipping insertion in model container [2024-06-27 18:14:44,105 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:14:42" (3/4) ... [2024-06-27 18:14:44,105 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@646461bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:14:44, skipping insertion in model container [2024-06-27 18:14:44,105 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:14:44" (4/4) ... [2024-06-27 18:14:44,107 INFO L112 eAbstractionObserver]: Analyzing ICFG mix007.opt.i [2024-06-27 18:14:44,159 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:14:44,159 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-06-27 18:14:44,160 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:14:44,218 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:14:44,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 59 transitions, 134 flow [2024-06-27 18:14:44,301 INFO L124 PetriNetUnfolderBase]: 1/55 cut-off events. [2024-06-27 18:14:44,302 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:14:44,307 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 5. Compared 97 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2024-06-27 18:14:44,307 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 59 transitions, 134 flow [2024-06-27 18:14:44,312 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 55 transitions, 122 flow [2024-06-27 18:14:44,322 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:14:44,330 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;@4f5e9381, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:14:44,330 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-06-27 18:14:44,334 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:14:44,335 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:14:44,335 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:14:44,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:14:44,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:14:44,336 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:14:44,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:14:44,341 INFO L85 PathProgramCache]: Analyzing trace with hash 401097774, now seen corresponding path program 1 times [2024-06-27 18:14:44,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:14:44,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027840681] [2024-06-27 18:14:44,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:14:44,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:14:44,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:14:45,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:14:45,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:14:45,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027840681] [2024-06-27 18:14:45,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027840681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:14:45,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:14:45,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:14:45,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065394149] [2024-06-27 18:14:45,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:14:45,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:14:45,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:14:45,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:14:45,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:14:45,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 59 [2024-06-27 18:14:45,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 55 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:45,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:14:45,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 59 [2024-06-27 18:14:45,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:14:48,805 INFO L124 PetriNetUnfolderBase]: 16081/24309 cut-off events. [2024-06-27 18:14:48,806 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2024-06-27 18:14:48,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46039 conditions, 24309 events. 16081/24309 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 975. Compared 173314 event pairs, 13373 based on Foata normal form. 601/23189 useless extension candidates. Maximal degree in co-relation 46026. Up to 21459 conditions per place. [2024-06-27 18:14:49,009 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 50 selfloop transitions, 6 changer transitions 0/73 dead transitions. [2024-06-27 18:14:49,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 73 transitions, 279 flow [2024-06-27 18:14:49,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:14:49,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:14:49,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 125 transitions. [2024-06-27 18:14:49,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7062146892655368 [2024-06-27 18:14:49,024 INFO L175 Difference]: Start difference. First operand has 67 places, 55 transitions, 122 flow. Second operand 3 states and 125 transitions. [2024-06-27 18:14:49,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 73 transitions, 279 flow [2024-06-27 18:14:49,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 73 transitions, 272 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 18:14:49,034 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 162 flow [2024-06-27 18:14:49,036 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} [2024-06-27 18:14:49,040 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -1 predicate places. [2024-06-27 18:14:49,040 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 162 flow [2024-06-27 18:14:49,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:49,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:14:49,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:14:49,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:14:49,042 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:14:49,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:14:49,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1090796713, now seen corresponding path program 1 times [2024-06-27 18:14:49,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:14:49,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607144170] [2024-06-27 18:14:49,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:14:49,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:14:49,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:14:49,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:14:49,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:14:49,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607144170] [2024-06-27 18:14:49,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607144170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:14:49,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:14:49,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:14:49,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715038701] [2024-06-27 18:14:49,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:14:49,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:14:49,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:14:49,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:14:49,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:14:49,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 59 [2024-06-27 18:14:49,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 59 transitions, 162 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:49,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:14:49,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 59 [2024-06-27 18:14:49,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:14:52,944 INFO L124 PetriNetUnfolderBase]: 18315/27438 cut-off events. [2024-06-27 18:14:52,944 INFO L125 PetriNetUnfolderBase]: For 4574/4574 co-relation queries the response was YES. [2024-06-27 18:14:52,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58383 conditions, 27438 events. 18315/27438 cut-off events. For 4574/4574 co-relation queries the response was YES. Maximal size of possible extension queue 1108. Compared 195246 event pairs, 13427 based on Foata normal form. 4/25882 useless extension candidates. Maximal degree in co-relation 58371. Up to 24360 conditions per place. [2024-06-27 18:14:53,215 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 65 selfloop transitions, 11 changer transitions 0/92 dead transitions. [2024-06-27 18:14:53,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 92 transitions, 400 flow [2024-06-27 18:14:53,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:14:53,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:14:53,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 160 transitions. [2024-06-27 18:14:53,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6779661016949152 [2024-06-27 18:14:53,224 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 162 flow. Second operand 4 states and 160 transitions. [2024-06-27 18:14:53,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 92 transitions, 400 flow [2024-06-27 18:14:53,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 92 transitions, 394 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:14:53,228 INFO L231 Difference]: Finished difference. Result has 69 places, 64 transitions, 220 flow [2024-06-27 18:14:53,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=220, PETRI_PLACES=69, PETRI_TRANSITIONS=64} [2024-06-27 18:14:53,230 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 2 predicate places. [2024-06-27 18:14:53,233 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 64 transitions, 220 flow [2024-06-27 18:14:53,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:53,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:14:53,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:14:53,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:14:53,241 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:14:53,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:14:53,247 INFO L85 PathProgramCache]: Analyzing trace with hash -200409850, now seen corresponding path program 1 times [2024-06-27 18:14:53,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:14:53,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627933089] [2024-06-27 18:14:53,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:14:53,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:14:53,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:14:54,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:14:54,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:14:54,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627933089] [2024-06-27 18:14:54,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627933089] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:14:54,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:14:54,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:14:54,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922595313] [2024-06-27 18:14:54,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:14:54,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:14:54,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:14:54,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:14:54,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:14:54,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 59 [2024-06-27 18:14:54,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 64 transitions, 220 flow. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:54,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:14:54,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 59 [2024-06-27 18:14:54,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:14:57,633 INFO L124 PetriNetUnfolderBase]: 23251/34629 cut-off events. [2024-06-27 18:14:57,633 INFO L125 PetriNetUnfolderBase]: For 15142/15142 co-relation queries the response was YES. [2024-06-27 18:14:57,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80676 conditions, 34629 events. 23251/34629 cut-off events. For 15142/15142 co-relation queries the response was YES. Maximal size of possible extension queue 1295. Compared 246164 event pairs, 13969 based on Foata normal form. 8/32691 useless extension candidates. Maximal degree in co-relation 80662. Up to 30721 conditions per place. [2024-06-27 18:14:57,872 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 91 selfloop transitions, 20 changer transitions 0/126 dead transitions. [2024-06-27 18:14:57,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 126 transitions, 620 flow [2024-06-27 18:14:57,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:14:57,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:14:57,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 229 transitions. [2024-06-27 18:14:57,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6468926553672316 [2024-06-27 18:14:57,875 INFO L175 Difference]: Start difference. First operand has 69 places, 64 transitions, 220 flow. Second operand 6 states and 229 transitions. [2024-06-27 18:14:57,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 126 transitions, 620 flow [2024-06-27 18:14:57,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 126 transitions, 584 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-06-27 18:14:57,883 INFO L231 Difference]: Finished difference. Result has 73 places, 72 transitions, 299 flow [2024-06-27 18:14:57,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=299, PETRI_PLACES=73, PETRI_TRANSITIONS=72} [2024-06-27 18:14:57,886 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 6 predicate places. [2024-06-27 18:14:57,886 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 72 transitions, 299 flow [2024-06-27 18:14:57,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:57,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:14:57,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:14:57,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:14:57,888 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:14:57,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:14:57,888 INFO L85 PathProgramCache]: Analyzing trace with hash 204889112, now seen corresponding path program 1 times [2024-06-27 18:14:57,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:14:57,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866024798] [2024-06-27 18:14:57,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:14:57,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:14:57,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:14:58,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:14:58,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:14:58,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866024798] [2024-06-27 18:14:58,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866024798] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:14:58,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:14:58,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:14:58,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773293111] [2024-06-27 18:14:58,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:14:58,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:14:58,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:14:58,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:14:58,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:14:58,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 59 [2024-06-27 18:14:58,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 72 transitions, 299 flow. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:58,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:14:58,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 59 [2024-06-27 18:14:58,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:15:02,166 INFO L124 PetriNetUnfolderBase]: 23241/32186 cut-off events. [2024-06-27 18:15:02,166 INFO L125 PetriNetUnfolderBase]: For 24938/24938 co-relation queries the response was YES. [2024-06-27 18:15:02,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85932 conditions, 32186 events. 23241/32186 cut-off events. For 24938/24938 co-relation queries the response was YES. Maximal size of possible extension queue 1090. Compared 200732 event pairs, 10984 based on Foata normal form. 3/30894 useless extension candidates. Maximal degree in co-relation 85915. Up to 30798 conditions per place. [2024-06-27 18:15:02,378 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 78 selfloop transitions, 12 changer transitions 0/104 dead transitions. [2024-06-27 18:15:02,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 104 transitions, 573 flow [2024-06-27 18:15:02,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:15:02,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:15:02,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 169 transitions. [2024-06-27 18:15:02,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5728813559322034 [2024-06-27 18:15:02,380 INFO L175 Difference]: Start difference. First operand has 73 places, 72 transitions, 299 flow. Second operand 5 states and 169 transitions. [2024-06-27 18:15:02,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 104 transitions, 573 flow [2024-06-27 18:15:02,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 104 transitions, 524 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-27 18:15:02,389 INFO L231 Difference]: Finished difference. Result has 75 places, 77 transitions, 326 flow [2024-06-27 18:15:02,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=326, PETRI_PLACES=75, PETRI_TRANSITIONS=77} [2024-06-27 18:15:02,390 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 8 predicate places. [2024-06-27 18:15:02,391 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 77 transitions, 326 flow [2024-06-27 18:15:02,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:15:02,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:15:02,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:15:02,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:15:02,392 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:15:02,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:15:02,392 INFO L85 PathProgramCache]: Analyzing trace with hash 2086090460, now seen corresponding path program 1 times [2024-06-27 18:15:02,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:15:02,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288623978] [2024-06-27 18:15:02,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:15:02,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:15:02,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:15:03,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:15:03,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:15:03,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288623978] [2024-06-27 18:15:03,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288623978] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:15:03,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:15:03,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:15:03,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353390982] [2024-06-27 18:15:03,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:15:03,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:15:03,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:15:03,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:15:03,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:15:03,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 59 [2024-06-27 18:15:03,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 77 transitions, 326 flow. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:15:03,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:15:03,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 59 [2024-06-27 18:15:03,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:15:07,390 INFO L124 PetriNetUnfolderBase]: 28205/38608 cut-off events. [2024-06-27 18:15:07,390 INFO L125 PetriNetUnfolderBase]: For 43852/43852 co-relation queries the response was YES. [2024-06-27 18:15:07,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110870 conditions, 38608 events. 28205/38608 cut-off events. For 43852/43852 co-relation queries the response was YES. Maximal size of possible extension queue 1286. Compared 238889 event pairs, 12876 based on Foata normal form. 5/37089 useless extension candidates. Maximal degree in co-relation 110851. Up to 37150 conditions per place. [2024-06-27 18:15:07,651 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 97 selfloop transitions, 27 changer transitions 0/137 dead transitions. [2024-06-27 18:15:07,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 137 transitions, 816 flow [2024-06-27 18:15:07,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:15:07,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:15:07,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 207 transitions. [2024-06-27 18:15:07,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5847457627118644 [2024-06-27 18:15:07,657 INFO L175 Difference]: Start difference. First operand has 75 places, 77 transitions, 326 flow. Second operand 6 states and 207 transitions. [2024-06-27 18:15:07,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 137 transitions, 816 flow [2024-06-27 18:15:07,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 137 transitions, 778 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-27 18:15:07,676 INFO L231 Difference]: Finished difference. Result has 80 places, 94 transitions, 505 flow [2024-06-27 18:15:07,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=505, PETRI_PLACES=80, PETRI_TRANSITIONS=94} [2024-06-27 18:15:07,679 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 13 predicate places. [2024-06-27 18:15:07,679 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 94 transitions, 505 flow [2024-06-27 18:15:07,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:15:07,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:15:07,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:15:07,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:15:07,680 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:15:07,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:15:07,681 INFO L85 PathProgramCache]: Analyzing trace with hash -670204071, now seen corresponding path program 1 times [2024-06-27 18:15:07,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:15:07,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852708810] [2024-06-27 18:15:07,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:15:07,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:15:07,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:15:08,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:15:08,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:15:08,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852708810] [2024-06-27 18:15:08,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852708810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:15:08,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:15:08,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:15:08,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108345109] [2024-06-27 18:15:08,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:15:08,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:15:08,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:15:08,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:15:08,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:15:08,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 59 [2024-06-27 18:15:08,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 94 transitions, 505 flow. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:15:08,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:15:08,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 59 [2024-06-27 18:15:08,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:15:13,247 INFO L124 PetriNetUnfolderBase]: 30806/41546 cut-off events. [2024-06-27 18:15:13,248 INFO L125 PetriNetUnfolderBase]: For 83385/83403 co-relation queries the response was YES. [2024-06-27 18:15:13,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134620 conditions, 41546 events. 30806/41546 cut-off events. For 83385/83403 co-relation queries the response was YES. Maximal size of possible extension queue 1391. Compared 253025 event pairs, 13352 based on Foata normal form. 11/40156 useless extension candidates. Maximal degree in co-relation 134598. Up to 40366 conditions per place. [2024-06-27 18:15:13,570 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 107 selfloop transitions, 26 changer transitions 0/149 dead transitions. [2024-06-27 18:15:13,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 149 transitions, 999 flow [2024-06-27 18:15:13,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:15:13,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:15:13,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 207 transitions. [2024-06-27 18:15:13,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5847457627118644 [2024-06-27 18:15:13,573 INFO L175 Difference]: Start difference. First operand has 80 places, 94 transitions, 505 flow. Second operand 6 states and 207 transitions. [2024-06-27 18:15:13,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 149 transitions, 999 flow [2024-06-27 18:15:13,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 149 transitions, 969 flow, removed 14 selfloop flow, removed 1 redundant places. [2024-06-27 18:15:13,603 INFO L231 Difference]: Finished difference. Result has 85 places, 104 transitions, 641 flow [2024-06-27 18:15:13,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=641, PETRI_PLACES=85, PETRI_TRANSITIONS=104} [2024-06-27 18:15:13,604 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 18 predicate places. [2024-06-27 18:15:13,604 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 104 transitions, 641 flow [2024-06-27 18:15:13,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:15:13,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:15:13,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:15:13,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:15:13,606 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:15:13,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:15:13,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1890926681, now seen corresponding path program 2 times [2024-06-27 18:15:13,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:15:13,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979743391] [2024-06-27 18:15:13,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:15:13,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:15:13,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:15:14,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:15:14,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:15:14,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979743391] [2024-06-27 18:15:14,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979743391] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:15:14,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:15:14,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:15:14,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8578110] [2024-06-27 18:15:14,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:15:14,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:15:14,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:15:14,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:15:14,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:15:14,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 59 [2024-06-27 18:15:14,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 104 transitions, 641 flow. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:15:14,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:15:14,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 59 [2024-06-27 18:15:14,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:15:19,043 INFO L124 PetriNetUnfolderBase]: 30796/41534 cut-off events. [2024-06-27 18:15:19,043 INFO L125 PetriNetUnfolderBase]: For 110320/110336 co-relation queries the response was YES. [2024-06-27 18:15:19,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143744 conditions, 41534 events. 30796/41534 cut-off events. For 110320/110336 co-relation queries the response was YES. Maximal size of possible extension queue 1391. Compared 253063 event pairs, 13355 based on Foata normal form. 9/40143 useless extension candidates. Maximal degree in co-relation 143719. Up to 40356 conditions per place. [2024-06-27 18:15:19,327 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 101 selfloop transitions, 26 changer transitions 0/143 dead transitions. [2024-06-27 18:15:19,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 143 transitions, 987 flow [2024-06-27 18:15:19,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:15:19,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:15:19,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 201 transitions. [2024-06-27 18:15:19,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5677966101694916 [2024-06-27 18:15:19,329 INFO L175 Difference]: Start difference. First operand has 85 places, 104 transitions, 641 flow. Second operand 6 states and 201 transitions. [2024-06-27 18:15:19,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 143 transitions, 987 flow [2024-06-27 18:15:19,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 143 transitions, 909 flow, removed 33 selfloop flow, removed 2 redundant places. [2024-06-27 18:15:19,418 INFO L231 Difference]: Finished difference. Result has 89 places, 104 transitions, 627 flow [2024-06-27 18:15:19,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=627, PETRI_PLACES=89, PETRI_TRANSITIONS=104} [2024-06-27 18:15:19,420 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 22 predicate places. [2024-06-27 18:15:19,420 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 104 transitions, 627 flow [2024-06-27 18:15:19,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:15:19,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:15:19,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:15:19,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:15:19,421 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:15:19,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:15:19,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1732610977, now seen corresponding path program 1 times [2024-06-27 18:15:19,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:15:19,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043947916] [2024-06-27 18:15:19,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:15:19,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:15:19,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:15:20,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:15:20,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:15:20,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043947916] [2024-06-27 18:15:20,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043947916] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:15:20,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:15:20,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:15:20,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563831942] [2024-06-27 18:15:20,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:15:20,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:15:20,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:15:20,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:15:20,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:15:20,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 59 [2024-06-27 18:15:20,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 104 transitions, 627 flow. Second operand has 8 states, 8 states have (on average 18.375) internal successors, (147), 8 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:15:20,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:15:20,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 59 [2024-06-27 18:15:20,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:15:25,011 INFO L124 PetriNetUnfolderBase]: 30995/41810 cut-off events. [2024-06-27 18:15:25,012 INFO L125 PetriNetUnfolderBase]: For 115558/115572 co-relation queries the response was YES. [2024-06-27 18:15:25,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144159 conditions, 41810 events. 30995/41810 cut-off events. For 115558/115572 co-relation queries the response was YES. Maximal size of possible extension queue 1391. Compared 254561 event pairs, 13340 based on Foata normal form. 7/40387 useless extension candidates. Maximal degree in co-relation 144132. Up to 40576 conditions per place. [2024-06-27 18:15:25,321 INFO L140 encePairwiseOnDemand]: 42/59 looper letters, 136 selfloop transitions, 40 changer transitions 0/192 dead transitions. [2024-06-27 18:15:25,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 192 transitions, 1287 flow [2024-06-27 18:15:25,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:15:25,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:15:25,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 274 transitions. [2024-06-27 18:15:25,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5805084745762712 [2024-06-27 18:15:25,323 INFO L175 Difference]: Start difference. First operand has 89 places, 104 transitions, 627 flow. Second operand 8 states and 274 transitions. [2024-06-27 18:15:25,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 192 transitions, 1287 flow [2024-06-27 18:15:25,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 192 transitions, 1195 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 18:15:25,387 INFO L231 Difference]: Finished difference. Result has 93 places, 128 transitions, 827 flow [2024-06-27 18:15:25,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=555, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=827, PETRI_PLACES=93, PETRI_TRANSITIONS=128} [2024-06-27 18:15:25,388 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 26 predicate places. [2024-06-27 18:15:25,388 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 128 transitions, 827 flow [2024-06-27 18:15:25,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.375) internal successors, (147), 8 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:15:25,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:15:25,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:15:25,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:15:25,389 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:15:25,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:15:25,390 INFO L85 PathProgramCache]: Analyzing trace with hash 698507637, now seen corresponding path program 2 times [2024-06-27 18:15:25,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:15:25,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851401363] [2024-06-27 18:15:25,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:15:25,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:15:25,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:15:26,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:15:26,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:15:26,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851401363] [2024-06-27 18:15:26,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851401363] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:15:26,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:15:26,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:15:26,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297062076] [2024-06-27 18:15:26,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:15:26,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:15:26,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:15:26,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:15:26,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:15:26,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 59 [2024-06-27 18:15:26,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 128 transitions, 827 flow. Second operand has 8 states, 8 states have (on average 18.375) internal successors, (147), 8 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:15:26,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:15:26,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 59 [2024-06-27 18:15:26,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand