./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix026_pso.opt_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/mix026_pso.opt_rmo.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/mix026_pso.opt_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/protection/mix026_pso.opt_rmo.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 18:25:32,812 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:25:32,899 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:25:32,923 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:25:32,923 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:25:32,948 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:25:32,948 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:25:32,949 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:25:32,949 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:25:32,952 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:25:32,953 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:25:32,953 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:25:32,953 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:25:32,954 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:25:32,955 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:25:32,955 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:25:32,955 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:25:32,955 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:25:32,955 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:25:32,956 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:25:32,956 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:25:32,956 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:25:32,956 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:25:32,957 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:25:32,957 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:25:32,957 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:25:32,957 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:25:32,957 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:25:32,958 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:25:32,958 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:25:32,959 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:25:32,959 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:25:32,959 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:25:32,959 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:25:32,959 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:25:32,960 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:25:32,960 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:25:32,960 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:25:32,960 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:25:32,960 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:25:32,960 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:25:32,961 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:25:32,961 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:25:32,961 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:25:33,179 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:25:33,206 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:25:33,210 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:25:33,211 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:25:33,211 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:25:33,212 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix026_pso.opt_rmo.opt.yml/witness.yml [2024-06-27 18:25:33,529 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:25:33,529 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:25:33,530 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix026_pso.opt_rmo.opt.i [2024-06-27 18:25:34,660 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:25:34,881 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:25:34,881 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix026_pso.opt_rmo.opt.i [2024-06-27 18:25:34,892 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9668f26ba/dfc3f6e1309b417bb6bd66d4219a86e6/FLAGb480343c7 [2024-06-27 18:25:34,902 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9668f26ba/dfc3f6e1309b417bb6bd66d4219a86e6 [2024-06-27 18:25:34,903 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:25:34,905 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:25:34,907 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:25:34,907 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:25:34,911 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:25:34,912 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:25:33" (1/2) ... [2024-06-27 18:25:34,912 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@339f8ae3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:25:34, skipping insertion in model container [2024-06-27 18:25:34,913 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:25:33" (1/2) ... [2024-06-27 18:25:34,914 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6cd91a04 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:25:34, skipping insertion in model container [2024-06-27 18:25:34,914 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:25:34" (2/2) ... [2024-06-27 18:25:34,915 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@339f8ae3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:25:34, skipping insertion in model container [2024-06-27 18:25:34,915 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:25:34" (2/2) ... [2024-06-27 18:25:34,915 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:25:35,018 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:25:35,019 INFO L97 edCorrectnessWitness]: Location invariant before [L859-L859] ((((((((((((((((((((((! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0) [2024-06-27 18:25:35,020 INFO L97 edCorrectnessWitness]: Location invariant before [L861-L861] ((((((((((((((((((((((! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0) [2024-06-27 18:25:35,020 INFO L97 edCorrectnessWitness]: Location invariant before [L864-L864] ((((((((((((((((((((((! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0) [2024-06-27 18:25:35,020 INFO L97 edCorrectnessWitness]: Location invariant before [L863-L863] ((((((((((((((((((((((! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0) [2024-06-27 18:25:35,020 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:25:35,020 INFO L106 edCorrectnessWitness]: ghost_update [L857-L857] multithreaded = 1; [2024-06-27 18:25:35,055 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:25:35,191 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/mix026_pso.opt_rmo.opt.i[956,969] [2024-06-27 18:25:35,311 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:25:35,325 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:25:35,358 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/mix026_pso.opt_rmo.opt.i[956,969] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:25:35,476 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:25:35,509 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:25:35,510 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:25:35 WrapperNode [2024-06-27 18:25:35,510 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:25:35,511 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:25:35,511 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:25:35,511 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:25:35,518 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:25:35" (1/1) ... [2024-06-27 18:25:35,532 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:25:35" (1/1) ... [2024-06-27 18:25:35,577 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 135 [2024-06-27 18:25:35,584 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:25:35,585 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:25:35,585 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:25:35,585 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:25:35,594 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:25:35" (1/1) ... [2024-06-27 18:25:35,595 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:25:35" (1/1) ... [2024-06-27 18:25:35,609 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:25:35" (1/1) ... [2024-06-27 18:25:35,626 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 18:25:35,629 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:25:35" (1/1) ... [2024-06-27 18:25:35,629 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:25:35" (1/1) ... [2024-06-27 18:25:35,675 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:25:35" (1/1) ... [2024-06-27 18:25:35,676 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:25:35" (1/1) ... [2024-06-27 18:25:35,678 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:25:35" (1/1) ... [2024-06-27 18:25:35,679 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:25:35" (1/1) ... [2024-06-27 18:25:35,681 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:25:35,682 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:25:35,689 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:25:35,689 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:25:35,690 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:25:35" (1/1) ... [2024-06-27 18:25:35,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:25:35,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:25:35,726 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 18:25:35,759 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 18:25:35,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:25:35,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:25:35,782 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:25:35,783 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:25:35,783 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:25:35,783 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:25:35,783 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 18:25:35,783 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 18:25:35,783 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-27 18:25:35,783 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-27 18:25:35,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:25:35,784 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:25:35,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:25:35,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:25:35,785 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 18:25:35,911 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:25:35,913 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:25:36,194 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:25:36,194 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:25:36,316 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:25:36,317 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:25:36,317 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:25:36 BoogieIcfgContainer [2024-06-27 18:25:36,317 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:25:36,319 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:25:36,319 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:25:36,322 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:25:36,322 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:25:33" (1/4) ... [2024-06-27 18:25:36,323 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f2b2b85 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:25:36, skipping insertion in model container [2024-06-27 18:25:36,323 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:25:34" (2/4) ... [2024-06-27 18:25:36,323 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f2b2b85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:25:36, skipping insertion in model container [2024-06-27 18:25:36,323 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:25:35" (3/4) ... [2024-06-27 18:25:36,323 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f2b2b85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:25:36, skipping insertion in model container [2024-06-27 18:25:36,324 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:25:36" (4/4) ... [2024-06-27 18:25:36,324 INFO L112 eAbstractionObserver]: Analyzing ICFG mix026_pso.opt_rmo.opt.i [2024-06-27 18:25:36,337 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:25:36,337 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-06-27 18:25:36,337 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:25:36,385 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:25:36,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 58 transitions, 132 flow [2024-06-27 18:25:36,430 INFO L124 PetriNetUnfolderBase]: 1/54 cut-off events. [2024-06-27 18:25:36,430 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:25:36,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 54 events. 1/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 96 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2024-06-27 18:25:36,434 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 58 transitions, 132 flow [2024-06-27 18:25:36,436 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 54 transitions, 120 flow [2024-06-27 18:25:36,494 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:25:36,499 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;@3f8e7e5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:25:36,499 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-06-27 18:25:36,502 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:25:36,502 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:25:36,503 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:25:36,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:36,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:25:36,504 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:25:36,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:36,507 INFO L85 PathProgramCache]: Analyzing trace with hash 368477346, now seen corresponding path program 1 times [2024-06-27 18:25:36,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:36,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014532175] [2024-06-27 18:25:36,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:36,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:36,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:37,451 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 18:25:37,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:37,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014532175] [2024-06-27 18:25:37,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014532175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:37,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:37,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:25:37,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40467464] [2024-06-27 18:25:37,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:37,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:25:37,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:37,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:25:37,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:25:37,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 58 [2024-06-27 18:25:37,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 54 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 18:25:37,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:37,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 58 [2024-06-27 18:25:37,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:39,707 INFO L124 PetriNetUnfolderBase]: 16488/23558 cut-off events. [2024-06-27 18:25:39,707 INFO L125 PetriNetUnfolderBase]: For 162/162 co-relation queries the response was YES. [2024-06-27 18:25:39,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45935 conditions, 23558 events. 16488/23558 cut-off events. For 162/162 co-relation queries the response was YES. Maximal size of possible extension queue 931. Compared 153500 event pairs, 10822 based on Foata normal form. 701/23035 useless extension candidates. Maximal degree in co-relation 45922. Up to 22026 conditions per place. [2024-06-27 18:25:39,932 INFO L140 encePairwiseOnDemand]: 47/58 looper letters, 50 selfloop transitions, 6 changer transitions 0/72 dead transitions. [2024-06-27 18:25:39,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 72 transitions, 277 flow [2024-06-27 18:25:39,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:25:39,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:25:39,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2024-06-27 18:25:39,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7011494252873564 [2024-06-27 18:25:39,943 INFO L175 Difference]: Start difference. First operand has 66 places, 54 transitions, 120 flow. Second operand 3 states and 122 transitions. [2024-06-27 18:25:39,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 72 transitions, 277 flow [2024-06-27 18:25:39,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 72 transitions, 270 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 18:25:39,947 INFO L231 Difference]: Finished difference. Result has 65 places, 58 transitions, 160 flow [2024-06-27 18:25:39,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=65, PETRI_TRANSITIONS=58} [2024-06-27 18:25:39,951 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -1 predicate places. [2024-06-27 18:25:39,951 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 58 transitions, 160 flow [2024-06-27 18:25:39,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 18:25:39,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:39,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:39,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:25:39,952 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:25:39,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:39,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1919433089, now seen corresponding path program 1 times [2024-06-27 18:25:39,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:39,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88774406] [2024-06-27 18:25:39,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:39,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:39,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:40,417 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 18:25:40,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:40,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88774406] [2024-06-27 18:25:40,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88774406] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:40,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:40,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:25:40,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324804598] [2024-06-27 18:25:40,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:40,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:25:40,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:40,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:25:40,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:25:40,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58 [2024-06-27 18:25:40,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 58 transitions, 160 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:40,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:40,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58 [2024-06-27 18:25:40,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:42,951 INFO L124 PetriNetUnfolderBase]: 19675/29337 cut-off events. [2024-06-27 18:25:42,952 INFO L125 PetriNetUnfolderBase]: For 4791/4791 co-relation queries the response was YES. [2024-06-27 18:25:42,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62661 conditions, 29337 events. 19675/29337 cut-off events. For 4791/4791 co-relation queries the response was YES. Maximal size of possible extension queue 1188. Compared 207775 event pairs, 14321 based on Foata normal form. 4/27534 useless extension candidates. Maximal degree in co-relation 62649. Up to 26160 conditions per place. [2024-06-27 18:25:43,094 INFO L140 encePairwiseOnDemand]: 47/58 looper letters, 65 selfloop transitions, 11 changer transitions 0/91 dead transitions. [2024-06-27 18:25:43,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 91 transitions, 398 flow [2024-06-27 18:25:43,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:25:43,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:25:43,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 156 transitions. [2024-06-27 18:25:43,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6724137931034483 [2024-06-27 18:25:43,102 INFO L175 Difference]: Start difference. First operand has 65 places, 58 transitions, 160 flow. Second operand 4 states and 156 transitions. [2024-06-27 18:25:43,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 91 transitions, 398 flow [2024-06-27 18:25:43,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 91 transitions, 392 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:25:43,106 INFO L231 Difference]: Finished difference. Result has 68 places, 63 transitions, 218 flow [2024-06-27 18:25:43,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=218, PETRI_PLACES=68, PETRI_TRANSITIONS=63} [2024-06-27 18:25:43,107 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 2 predicate places. [2024-06-27 18:25:43,109 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 63 transitions, 218 flow [2024-06-27 18:25:43,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:43,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:43,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:43,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:25:43,115 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:25:43,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:43,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1362684730, now seen corresponding path program 1 times [2024-06-27 18:25:43,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:43,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235710930] [2024-06-27 18:25:43,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:43,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:43,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:43,941 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 18:25:43,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:43,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235710930] [2024-06-27 18:25:43,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235710930] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:43,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:43,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:25:43,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923250232] [2024-06-27 18:25:43,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:43,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:25:43,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:43,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:25:43,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:25:44,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 58 [2024-06-27 18:25:44,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 63 transitions, 218 flow. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 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 18:25:44,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:44,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 58 [2024-06-27 18:25:44,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:47,485 INFO L124 PetriNetUnfolderBase]: 24976/36317 cut-off events. [2024-06-27 18:25:47,486 INFO L125 PetriNetUnfolderBase]: For 14781/14781 co-relation queries the response was YES. [2024-06-27 18:25:47,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85925 conditions, 36317 events. 24976/36317 cut-off events. For 14781/14781 co-relation queries the response was YES. Maximal size of possible extension queue 1304. Compared 247691 event pairs, 12484 based on Foata normal form. 8/34240 useless extension candidates. Maximal degree in co-relation 85911. Up to 32996 conditions per place. [2024-06-27 18:25:47,658 INFO L140 encePairwiseOnDemand]: 46/58 looper letters, 91 selfloop transitions, 20 changer transitions 0/125 dead transitions. [2024-06-27 18:25:47,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 125 transitions, 618 flow [2024-06-27 18:25:47,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:25:47,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:25:47,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 223 transitions. [2024-06-27 18:25:47,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6408045977011494 [2024-06-27 18:25:47,660 INFO L175 Difference]: Start difference. First operand has 68 places, 63 transitions, 218 flow. Second operand 6 states and 223 transitions. [2024-06-27 18:25:47,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 125 transitions, 618 flow [2024-06-27 18:25:47,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 125 transitions, 582 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-06-27 18:25:47,664 INFO L231 Difference]: Finished difference. Result has 72 places, 71 transitions, 297 flow [2024-06-27 18:25:47,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=297, PETRI_PLACES=72, PETRI_TRANSITIONS=71} [2024-06-27 18:25:47,665 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 6 predicate places. [2024-06-27 18:25:47,665 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 71 transitions, 297 flow [2024-06-27 18:25:47,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 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 18:25:47,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:47,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:47,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:25:47,666 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:25:47,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:47,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1594783448, now seen corresponding path program 1 times [2024-06-27 18:25:47,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:47,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237260150] [2024-06-27 18:25:47,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:47,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:47,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:48,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:48,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:48,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237260150] [2024-06-27 18:25:48,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237260150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:48,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:48,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:25:48,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471255729] [2024-06-27 18:25:48,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:48,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:25:48,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:48,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:25:48,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:25:48,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 58 [2024-06-27 18:25:48,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 71 transitions, 297 flow. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:48,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:48,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 58 [2024-06-27 18:25:48,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:51,768 INFO L124 PetriNetUnfolderBase]: 23744/33590 cut-off events. [2024-06-27 18:25:51,768 INFO L125 PetriNetUnfolderBase]: For 25319/25319 co-relation queries the response was YES. [2024-06-27 18:25:51,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88781 conditions, 33590 events. 23744/33590 cut-off events. For 25319/25319 co-relation queries the response was YES. Maximal size of possible extension queue 1176. Compared 217517 event pairs, 10780 based on Foata normal form. 6/32156 useless extension candidates. Maximal degree in co-relation 88764. Up to 31473 conditions per place. [2024-06-27 18:25:51,939 INFO L140 encePairwiseOnDemand]: 47/58 looper letters, 79 selfloop transitions, 12 changer transitions 0/104 dead transitions. [2024-06-27 18:25:51,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 104 transitions, 575 flow [2024-06-27 18:25:51,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:25:51,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:25:51,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 165 transitions. [2024-06-27 18:25:51,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5689655172413793 [2024-06-27 18:25:51,941 INFO L175 Difference]: Start difference. First operand has 72 places, 71 transitions, 297 flow. Second operand 5 states and 165 transitions. [2024-06-27 18:25:51,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 104 transitions, 575 flow [2024-06-27 18:25:51,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 104 transitions, 526 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-27 18:25:51,951 INFO L231 Difference]: Finished difference. Result has 74 places, 76 transitions, 324 flow [2024-06-27 18:25:51,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=324, PETRI_PLACES=74, PETRI_TRANSITIONS=76} [2024-06-27 18:25:51,953 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 8 predicate places. [2024-06-27 18:25:51,953 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 76 transitions, 324 flow [2024-06-27 18:25:51,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:51,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:51,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:51,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:25:51,954 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:25:51,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:51,954 INFO L85 PathProgramCache]: Analyzing trace with hash 2100507216, now seen corresponding path program 1 times [2024-06-27 18:25:51,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:51,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117020384] [2024-06-27 18:25:51,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:51,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:51,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:52,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:52,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:52,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117020384] [2024-06-27 18:25:52,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117020384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:52,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:52,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:25:52,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842760381] [2024-06-27 18:25:52,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:52,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:25:52,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:52,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:25:52,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:25:52,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 58 [2024-06-27 18:25:52,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 76 transitions, 324 flow. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 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) [2024-06-27 18:25:52,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:52,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 58 [2024-06-27 18:25:52,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:53,087 INFO L124 PetriNetUnfolderBase]: 5516/10450 cut-off events. [2024-06-27 18:25:53,087 INFO L125 PetriNetUnfolderBase]: For 7835/8623 co-relation queries the response was YES. [2024-06-27 18:25:53,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23731 conditions, 10450 events. 5516/10450 cut-off events. For 7835/8623 co-relation queries the response was YES. Maximal size of possible extension queue 697. Compared 92231 event pairs, 2460 based on Foata normal form. 2/9491 useless extension candidates. Maximal degree in co-relation 23713. Up to 6478 conditions per place. [2024-06-27 18:25:53,170 INFO L140 encePairwiseOnDemand]: 55/58 looper letters, 35 selfloop transitions, 7 changer transitions 0/83 dead transitions. [2024-06-27 18:25:53,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 83 transitions, 396 flow [2024-06-27 18:25:53,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:25:53,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:25:53,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 134 transitions. [2024-06-27 18:25:53,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7701149425287356 [2024-06-27 18:25:53,172 INFO L175 Difference]: Start difference. First operand has 74 places, 76 transitions, 324 flow. Second operand 3 states and 134 transitions. [2024-06-27 18:25:53,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 83 transitions, 396 flow [2024-06-27 18:25:53,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 83 transitions, 367 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-27 18:25:53,175 INFO L231 Difference]: Finished difference. Result has 72 places, 70 transitions, 269 flow [2024-06-27 18:25:53,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=269, PETRI_PLACES=72, PETRI_TRANSITIONS=70} [2024-06-27 18:25:53,176 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 6 predicate places. [2024-06-27 18:25:53,176 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 70 transitions, 269 flow [2024-06-27 18:25:53,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 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) [2024-06-27 18:25:53,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:53,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:53,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:25:53,177 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:25:53,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:53,177 INFO L85 PathProgramCache]: Analyzing trace with hash 710751559, now seen corresponding path program 1 times [2024-06-27 18:25:53,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:53,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853692884] [2024-06-27 18:25:53,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:53,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:53,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:54,011 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 18:25:54,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:54,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853692884] [2024-06-27 18:25:54,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853692884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:54,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:54,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:25:54,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821003853] [2024-06-27 18:25:54,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:54,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:25:54,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:54,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:25:54,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:25:54,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2024-06-27 18:25:54,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 70 transitions, 269 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) [2024-06-27 18:25:54,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:54,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2024-06-27 18:25:54,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:57,000 INFO L124 PetriNetUnfolderBase]: 24277/33112 cut-off events. [2024-06-27 18:25:57,000 INFO L125 PetriNetUnfolderBase]: For 47603/47603 co-relation queries the response was YES. [2024-06-27 18:25:57,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93446 conditions, 33112 events. 24277/33112 cut-off events. For 47603/47603 co-relation queries the response was YES. Maximal size of possible extension queue 1094. Compared 198277 event pairs, 10534 based on Foata normal form. 6/32952 useless extension candidates. Maximal degree in co-relation 93428. Up to 31979 conditions per place. [2024-06-27 18:25:57,242 INFO L140 encePairwiseOnDemand]: 47/58 looper letters, 89 selfloop transitions, 21 changer transitions 4/126 dead transitions. [2024-06-27 18:25:57,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 126 transitions, 693 flow [2024-06-27 18:25:57,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:25:57,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:25:57,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 200 transitions. [2024-06-27 18:25:57,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5747126436781609 [2024-06-27 18:25:57,244 INFO L175 Difference]: Start difference. First operand has 72 places, 70 transitions, 269 flow. Second operand 6 states and 200 transitions. [2024-06-27 18:25:57,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 126 transitions, 693 flow [2024-06-27 18:25:57,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 126 transitions, 675 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:25:57,259 INFO L231 Difference]: Finished difference. Result has 76 places, 77 transitions, 370 flow [2024-06-27 18:25:57,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=370, PETRI_PLACES=76, PETRI_TRANSITIONS=77} [2024-06-27 18:25:57,260 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 10 predicate places. [2024-06-27 18:25:57,260 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 77 transitions, 370 flow [2024-06-27 18:25:57,261 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) [2024-06-27 18:25:57,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:57,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:57,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:25:57,261 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:25:57,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:57,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1117750249, now seen corresponding path program 2 times [2024-06-27 18:25:57,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:57,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820131427] [2024-06-27 18:25:57,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:57,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:57,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:58,008 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 18:25:58,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:58,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820131427] [2024-06-27 18:25:58,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820131427] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:58,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:58,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:25:58,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069518129] [2024-06-27 18:25:58,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:58,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:25:58,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:58,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:25:58,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:25:58,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2024-06-27 18:25:58,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 77 transitions, 370 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) [2024-06-27 18:25:58,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:58,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2024-06-27 18:25:58,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:00,917 INFO L124 PetriNetUnfolderBase]: 21311/29119 cut-off events. [2024-06-27 18:26:00,917 INFO L125 PetriNetUnfolderBase]: For 55119/55125 co-relation queries the response was YES. [2024-06-27 18:26:01,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87754 conditions, 29119 events. 21311/29119 cut-off events. For 55119/55125 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 172290 event pairs, 9380 based on Foata normal form. 12/28990 useless extension candidates. Maximal degree in co-relation 87734. Up to 28130 conditions per place. [2024-06-27 18:26:01,139 INFO L140 encePairwiseOnDemand]: 47/58 looper letters, 82 selfloop transitions, 21 changer transitions 0/115 dead transitions. [2024-06-27 18:26:01,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 115 transitions, 666 flow [2024-06-27 18:26:01,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:26:01,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:26:01,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 189 transitions. [2024-06-27 18:26:01,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5431034482758621 [2024-06-27 18:26:01,141 INFO L175 Difference]: Start difference. First operand has 76 places, 77 transitions, 370 flow. Second operand 6 states and 189 transitions. [2024-06-27 18:26:01,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 115 transitions, 666 flow [2024-06-27 18:26:01,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 115 transitions, 620 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-06-27 18:26:01,187 INFO L231 Difference]: Finished difference. Result has 79 places, 77 transitions, 377 flow [2024-06-27 18:26:01,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=377, PETRI_PLACES=79, PETRI_TRANSITIONS=77} [2024-06-27 18:26:01,188 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 13 predicate places. [2024-06-27 18:26:01,188 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 77 transitions, 377 flow [2024-06-27 18:26:01,188 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) [2024-06-27 18:26:01,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:01,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:01,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:26:01,189 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:26:01,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:01,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1997941605, now seen corresponding path program 1 times [2024-06-27 18:26:01,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:01,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123397095] [2024-06-27 18:26:01,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:01,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:01,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:02,085 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 18:26:02,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:02,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123397095] [2024-06-27 18:26:02,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123397095] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:02,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:02,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:26:02,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855358198] [2024-06-27 18:26:02,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:02,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:26:02,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:02,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:26:02,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:26:02,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2024-06-27 18:26:02,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 77 transitions, 377 flow. Second operand has 8 states, 8 states have (on average 17.375) internal successors, (139), 8 states have internal predecessors, (139), 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 18:26:02,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:02,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2024-06-27 18:26:02,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand