./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi006_power.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/rfi006_power.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb4cb34f 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/rfi006_power.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/rfi006_power.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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-eb4cb34-m [2024-06-21 19:13:54,508 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-21 19:13:54,564 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-21 19:13:54,569 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-21 19:13:54,570 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-21 19:13:54,593 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-21 19:13:54,595 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-21 19:13:54,596 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-21 19:13:54,596 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-21 19:13:54,599 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-21 19:13:54,600 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-21 19:13:54,600 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-21 19:13:54,601 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-21 19:13:54,602 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-21 19:13:54,602 INFO L153 SettingsManager]: * Use SBE=true [2024-06-21 19:13:54,602 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-21 19:13:54,602 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-21 19:13:54,602 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-21 19:13:54,603 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-21 19:13:54,603 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-21 19:13:54,603 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-21 19:13:54,603 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-21 19:13:54,603 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-21 19:13:54,604 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-21 19:13:54,604 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-21 19:13:54,604 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-21 19:13:54,604 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-21 19:13:54,604 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-21 19:13:54,605 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-21 19:13:54,605 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-21 19:13:54,606 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-21 19:13:54,606 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-21 19:13:54,606 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 19:13:54,606 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-21 19:13:54,607 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-21 19:13:54,607 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-21 19:13:54,607 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-21 19:13:54,607 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-21 19:13:54,607 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-21 19:13:54,607 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-21 19:13:54,608 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-21 19:13:54,608 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-21 19:13:54,608 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-21 19:13:54,608 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-21 19:13:54,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-21 19:13:54,860 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-21 19:13:54,862 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-21 19:13:54,863 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-21 19:13:54,864 INFO L274 PluginConnector]: CDTParser initialized [2024-06-21 19:13:54,865 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi006_power.opt.i [2024-06-21 19:13:55,882 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-21 19:13:56,205 INFO L384 CDTParser]: Found 1 translation units. [2024-06-21 19:13:56,206 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi006_power.opt.i [2024-06-21 19:13:56,225 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24cb28a28/77fd0dbb523f47569c7b803c47cacb05/FLAG3d47c4ce9 [2024-06-21 19:13:56,237 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24cb28a28/77fd0dbb523f47569c7b803c47cacb05 [2024-06-21 19:13:56,239 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-21 19:13:56,240 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-21 19:13:56,240 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/rfi006_power.opt.yml/witness.yml [2024-06-21 19:13:56,312 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-21 19:13:56,313 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-21 19:13:56,315 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-21 19:13:56,315 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-21 19:13:56,319 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-21 19:13:56,319 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 07:13:56" (1/2) ... [2024-06-21 19:13:56,320 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d984247 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:13:56, skipping insertion in model container [2024-06-21 19:13:56,321 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 07:13:56" (1/2) ... [2024-06-21 19:13:56,323 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@11dbdb1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:13:56, skipping insertion in model container [2024-06-21 19:13:56,324 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 07:13:56" (2/2) ... [2024-06-21 19:13:56,324 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d984247 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:13:56, skipping insertion in model container [2024-06-21 19:13:56,324 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 07:13:56" (2/2) ... [2024-06-21 19:13:56,324 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-21 19:13:56,349 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-21 19:13:56,350 INFO L97 edCorrectnessWitness]: Location invariant before [L860-L860] ! multithreaded || ((((((((((((((((((((0LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff0_thd3 >= 0LL && (0LL - (long long )__unbuffered_p1_EBX) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x) + (long long )x$r_buff0_thd3 >= 0LL) && (0LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$r_buff0_thd3 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd3) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd3) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd3) + (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff0_thd3 - (long long )x$r_buff1_thd3 >= 0LL) && (long long )x$r_buff0_thd3 - (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd3 - (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd3 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff0_thd3 - (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff1_thd3 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff1_thd3 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-21 19:13:56,350 INFO L97 edCorrectnessWitness]: Location invariant before [L863-L863] ! multithreaded || ((((((((((((((((((((0LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff0_thd3 >= 0LL && (0LL - (long long )__unbuffered_p1_EBX) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x) + (long long )x$r_buff0_thd3 >= 0LL) && (0LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$r_buff0_thd3 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd3) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd3) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd3) + (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff0_thd3 - (long long )x$r_buff1_thd3 >= 0LL) && (long long )x$r_buff0_thd3 - (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd3 - (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd3 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff0_thd3 - (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff1_thd3 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff1_thd3 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-21 19:13:56,350 INFO L97 edCorrectnessWitness]: Location invariant before [L862-L862] ! multithreaded || ((((((((((((((((((((0LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff0_thd3 >= 0LL && (0LL - (long long )__unbuffered_p1_EBX) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x) + (long long )x$r_buff0_thd3 >= 0LL) && (0LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$r_buff0_thd3 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd3) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd3) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd3) + (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff0_thd3 - (long long )x$r_buff1_thd3 >= 0LL) && (long long )x$r_buff0_thd3 - (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd3 - (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd3 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff0_thd3 - (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff1_thd3 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff1_thd3 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-21 19:13:56,350 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-21 19:13:56,351 INFO L106 edCorrectnessWitness]: ghost_update [L858-L858] multithreaded = 1; [2024-06-21 19:13:56,396 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-21 19:13:56,694 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 19:13:56,702 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-21 19:13:56,817 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 19:13:56,846 INFO L206 MainTranslator]: Completed translation [2024-06-21 19:13:56,847 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:13:56 WrapperNode [2024-06-21 19:13:56,847 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-21 19:13:56,848 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-21 19:13:56,848 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-21 19:13:56,848 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-21 19:13:56,853 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:13:56" (1/1) ... [2024-06-21 19:13:56,868 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:13:56" (1/1) ... [2024-06-21 19:13:56,898 INFO L138 Inliner]: procedures = 175, calls = 70, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 197 [2024-06-21 19:13:56,899 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-21 19:13:56,899 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-21 19:13:56,899 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-21 19:13:56,899 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-21 19:13:56,908 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:13:56" (1/1) ... [2024-06-21 19:13:56,908 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:13:56" (1/1) ... [2024-06-21 19:13:56,912 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:13:56" (1/1) ... [2024-06-21 19:13:56,964 INFO L175 MemorySlicer]: Split 28 memory accesses to 2 slices as follows [26, 2]. 93 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [1, 2]. The 6 writes are split as follows [6, 0]. [2024-06-21 19:13:56,964 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:13:56" (1/1) ... [2024-06-21 19:13:56,964 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:13:56" (1/1) ... [2024-06-21 19:13:56,972 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:13:56" (1/1) ... [2024-06-21 19:13:56,974 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:13:56" (1/1) ... [2024-06-21 19:13:56,977 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:13:56" (1/1) ... [2024-06-21 19:13:56,978 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:13:56" (1/1) ... [2024-06-21 19:13:56,982 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-21 19:13:56,983 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-21 19:13:56,983 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-21 19:13:56,983 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-21 19:13:56,983 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:13:56" (1/1) ... [2024-06-21 19:13:56,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 19:13:57,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 19:13:57,018 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) [2024-06-21 19:13:57,036 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 [2024-06-21 19:13:57,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-21 19:13:57,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-21 19:13:57,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-21 19:13:57,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-21 19:13:57,052 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-21 19:13:57,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-21 19:13:57,052 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-21 19:13:57,052 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-21 19:13:57,053 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-21 19:13:57,053 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-21 19:13:57,053 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-21 19:13:57,054 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-21 19:13:57,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-21 19:13:57,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-21 19:13:57,055 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-21 19:13:57,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-21 19:13:57,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-21 19:13:57,058 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-21 19:13:57,213 INFO L244 CfgBuilder]: Building ICFG [2024-06-21 19:13:57,214 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-21 19:13:57,707 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-21 19:13:57,707 INFO L293 CfgBuilder]: Performing block encoding [2024-06-21 19:13:58,003 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-21 19:13:58,003 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-21 19:13:58,004 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 07:13:58 BoogieIcfgContainer [2024-06-21 19:13:58,004 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-21 19:13:58,005 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-21 19:13:58,006 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-21 19:13:58,008 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-21 19:13:58,008 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 07:13:56" (1/4) ... [2024-06-21 19:13:58,009 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43f03ad8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 07:13:58, skipping insertion in model container [2024-06-21 19:13:58,009 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 07:13:56" (2/4) ... [2024-06-21 19:13:58,009 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43f03ad8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 07:13:58, skipping insertion in model container [2024-06-21 19:13:58,009 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:13:56" (3/4) ... [2024-06-21 19:13:58,010 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43f03ad8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 07:13:58, skipping insertion in model container [2024-06-21 19:13:58,010 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 07:13:58" (4/4) ... [2024-06-21 19:13:58,011 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi006_power.opt.i [2024-06-21 19:13:58,025 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-21 19:13:58,025 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-21 19:13:58,026 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-21 19:13:58,084 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-21 19:13:58,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 42 transitions, 96 flow [2024-06-21 19:13:58,126 INFO L124 PetriNetUnfolderBase]: 0/39 cut-off events. [2024-06-21 19:13:58,126 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 19:13:58,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 39 events. 0/39 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 60 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-21 19:13:58,128 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 42 transitions, 96 flow [2024-06-21 19:13:58,130 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 33 transitions, 75 flow [2024-06-21 19:13:58,136 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-21 19:13:58,141 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;@6869c911, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-21 19:13:58,141 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-21 19:13:58,143 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-21 19:13:58,144 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-21 19:13:58,144 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 19:13:58,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:58,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-21 19:13:58,145 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 19:13:58,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:58,148 INFO L85 PathProgramCache]: Analyzing trace with hash 741315346, now seen corresponding path program 1 times [2024-06-21 19:13:58,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:58,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711428314] [2024-06-21 19:13:58,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:58,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:58,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:58,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:13:58,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:58,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711428314] [2024-06-21 19:13:58,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711428314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:58,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:58,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-21 19:13:58,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373050599] [2024-06-21 19:13:58,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:58,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 19:13:58,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:58,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 19:13:58,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 19:13:58,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 42 [2024-06-21 19:13:58,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2024-06-21 19:13:58,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:58,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 42 [2024-06-21 19:13:58,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:58,894 INFO L124 PetriNetUnfolderBase]: 225/420 cut-off events. [2024-06-21 19:13:58,895 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-06-21 19:13:58,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 824 conditions, 420 events. 225/420 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2195 event pairs, 90 based on Foata normal form. 9/402 useless extension candidates. Maximal degree in co-relation 812. Up to 235 conditions per place. [2024-06-21 19:13:58,903 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 22 selfloop transitions, 2 changer transitions 0/36 dead transitions. [2024-06-21 19:13:58,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 36 transitions, 129 flow [2024-06-21 19:13:58,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 19:13:58,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 19:13:58,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2024-06-21 19:13:58,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-06-21 19:13:58,914 INFO L175 Difference]: Start difference. First operand has 43 places, 33 transitions, 75 flow. Second operand 3 states and 72 transitions. [2024-06-21 19:13:58,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 36 transitions, 129 flow [2024-06-21 19:13:58,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 36 transitions, 126 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-21 19:13:58,923 INFO L231 Difference]: Finished difference. Result has 41 places, 31 transitions, 76 flow [2024-06-21 19:13:58,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=41, PETRI_TRANSITIONS=31} [2024-06-21 19:13:58,926 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -2 predicate places. [2024-06-21 19:13:58,927 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 76 flow [2024-06-21 19:13:58,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2024-06-21 19:13:58,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:58,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:58,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-21 19:13:58,928 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 19:13:58,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:58,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1094181004, now seen corresponding path program 1 times [2024-06-21 19:13:58,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:58,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108819996] [2024-06-21 19:13:58,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:58,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:58,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:59,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:13:59,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:59,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108819996] [2024-06-21 19:13:59,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108819996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:59,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:59,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 19:13:59,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27205458] [2024-06-21 19:13:59,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:59,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 19:13:59,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:59,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 19:13:59,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-21 19:13:59,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 42 [2024-06-21 19:13:59,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 76 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2024-06-21 19:13:59,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:59,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 42 [2024-06-21 19:13:59,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:59,470 INFO L124 PetriNetUnfolderBase]: 222/463 cut-off events. [2024-06-21 19:13:59,470 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2024-06-21 19:13:59,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 925 conditions, 463 events. 222/463 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2320 event pairs, 101 based on Foata normal form. 1/450 useless extension candidates. Maximal degree in co-relation 913. Up to 356 conditions per place. [2024-06-21 19:13:59,476 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 28 selfloop transitions, 7 changer transitions 0/47 dead transitions. [2024-06-21 19:13:59,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 47 transitions, 185 flow [2024-06-21 19:13:59,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 19:13:59,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 19:13:59,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2024-06-21 19:13:59,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-06-21 19:13:59,479 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 76 flow. Second operand 4 states and 96 transitions. [2024-06-21 19:13:59,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 47 transitions, 185 flow [2024-06-21 19:13:59,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 47 transitions, 179 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-21 19:13:59,483 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 117 flow [2024-06-21 19:13:59,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=117, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2024-06-21 19:13:59,485 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2024-06-21 19:13:59,485 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 117 flow [2024-06-21 19:13:59,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2024-06-21 19:13:59,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:59,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:59,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-21 19:13:59,491 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 19:13:59,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:59,493 INFO L85 PathProgramCache]: Analyzing trace with hash -440125664, now seen corresponding path program 1 times [2024-06-21 19:13:59,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:59,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8046973] [2024-06-21 19:13:59,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:59,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:59,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:00,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:00,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:00,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8046973] [2024-06-21 19:14:00,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8046973] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:00,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:00,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 19:14:00,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357001885] [2024-06-21 19:14:00,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:00,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 19:14:00,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:00,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 19:14:00,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-21 19:14:00,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 42 [2024-06-21 19:14:00,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 117 flow. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:00,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:00,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 42 [2024-06-21 19:14:00,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:00,294 INFO L124 PetriNetUnfolderBase]: 217/452 cut-off events. [2024-06-21 19:14:00,294 INFO L125 PetriNetUnfolderBase]: For 132/144 co-relation queries the response was YES. [2024-06-21 19:14:00,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1069 conditions, 452 events. 217/452 cut-off events. For 132/144 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2289 event pairs, 100 based on Foata normal form. 4/444 useless extension candidates. Maximal degree in co-relation 1055. Up to 343 conditions per place. [2024-06-21 19:14:00,297 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 30 selfloop transitions, 9 changer transitions 0/51 dead transitions. [2024-06-21 19:14:00,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 51 transitions, 231 flow [2024-06-21 19:14:00,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 19:14:00,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 19:14:00,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2024-06-21 19:14:00,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2024-06-21 19:14:00,299 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 117 flow. Second operand 5 states and 115 transitions. [2024-06-21 19:14:00,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 51 transitions, 231 flow [2024-06-21 19:14:00,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 51 transitions, 231 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-21 19:14:00,300 INFO L231 Difference]: Finished difference. Result has 49 places, 39 transitions, 152 flow [2024-06-21 19:14:00,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=152, PETRI_PLACES=49, PETRI_TRANSITIONS=39} [2024-06-21 19:14:00,301 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 6 predicate places. [2024-06-21 19:14:00,301 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 39 transitions, 152 flow [2024-06-21 19:14:00,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:00,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:00,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:00,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-21 19:14:00,302 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 19:14:00,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:00,302 INFO L85 PathProgramCache]: Analyzing trace with hash -771387125, now seen corresponding path program 1 times [2024-06-21 19:14:00,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:00,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259682112] [2024-06-21 19:14:00,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:00,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:00,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:00,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:00,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:00,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259682112] [2024-06-21 19:14:00,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259682112] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:00,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:00,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:14:00,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999820895] [2024-06-21 19:14:00,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:00,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:14:00,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:00,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:14:00,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:14:00,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-06-21 19:14:00,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 39 transitions, 152 flow. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:00,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:00,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-06-21 19:14:00,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:01,029 INFO L124 PetriNetUnfolderBase]: 247/494 cut-off events. [2024-06-21 19:14:01,029 INFO L125 PetriNetUnfolderBase]: For 384/396 co-relation queries the response was YES. [2024-06-21 19:14:01,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1341 conditions, 494 events. 247/494 cut-off events. For 384/396 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2608 event pairs, 146 based on Foata normal form. 4/482 useless extension candidates. Maximal degree in co-relation 1323. Up to 361 conditions per place. [2024-06-21 19:14:01,032 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 38 selfloop transitions, 14 changer transitions 0/63 dead transitions. [2024-06-21 19:14:01,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 63 transitions, 330 flow [2024-06-21 19:14:01,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:14:01,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:14:01,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-06-21 19:14:01,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-06-21 19:14:01,034 INFO L175 Difference]: Start difference. First operand has 49 places, 39 transitions, 152 flow. Second operand 6 states and 133 transitions. [2024-06-21 19:14:01,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 63 transitions, 330 flow [2024-06-21 19:14:01,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 63 transitions, 309 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-21 19:14:01,036 INFO L231 Difference]: Finished difference. Result has 54 places, 45 transitions, 212 flow [2024-06-21 19:14:01,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=212, PETRI_PLACES=54, PETRI_TRANSITIONS=45} [2024-06-21 19:14:01,037 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 11 predicate places. [2024-06-21 19:14:01,037 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 45 transitions, 212 flow [2024-06-21 19:14:01,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:01,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:01,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:01,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-21 19:14:01,038 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 19:14:01,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:01,039 INFO L85 PathProgramCache]: Analyzing trace with hash -811934875, now seen corresponding path program 2 times [2024-06-21 19:14:01,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:01,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190637620] [2024-06-21 19:14:01,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:01,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:01,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:01,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:01,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:01,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190637620] [2024-06-21 19:14:01,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190637620] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:01,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:01,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:14:01,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501414816] [2024-06-21 19:14:01,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:01,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:14:01,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:01,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:14:01,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:14:01,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-06-21 19:14:01,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 212 flow. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:01,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:01,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-06-21 19:14:01,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:01,648 INFO L124 PetriNetUnfolderBase]: 277/564 cut-off events. [2024-06-21 19:14:01,648 INFO L125 PetriNetUnfolderBase]: For 733/747 co-relation queries the response was YES. [2024-06-21 19:14:01,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1701 conditions, 564 events. 277/564 cut-off events. For 733/747 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3003 event pairs, 42 based on Foata normal form. 4/551 useless extension candidates. Maximal degree in co-relation 1679. Up to 359 conditions per place. [2024-06-21 19:14:01,652 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 46 selfloop transitions, 20 changer transitions 0/77 dead transitions. [2024-06-21 19:14:01,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 77 transitions, 465 flow [2024-06-21 19:14:01,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:14:01,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:14:01,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-21 19:14:01,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-06-21 19:14:01,653 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 212 flow. Second operand 6 states and 140 transitions. [2024-06-21 19:14:01,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 77 transitions, 465 flow [2024-06-21 19:14:01,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 77 transitions, 438 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-06-21 19:14:01,657 INFO L231 Difference]: Finished difference. Result has 61 places, 54 transitions, 326 flow [2024-06-21 19:14:01,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=326, PETRI_PLACES=61, PETRI_TRANSITIONS=54} [2024-06-21 19:14:01,658 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 18 predicate places. [2024-06-21 19:14:01,658 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 54 transitions, 326 flow [2024-06-21 19:14:01,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:01,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:01,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:01,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-21 19:14:01,659 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 19:14:01,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:01,659 INFO L85 PathProgramCache]: Analyzing trace with hash -759006965, now seen corresponding path program 3 times [2024-06-21 19:14:01,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:01,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868201380] [2024-06-21 19:14:01,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:01,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:01,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:02,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:02,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:02,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868201380] [2024-06-21 19:14:02,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868201380] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:02,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:02,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:14:02,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686090580] [2024-06-21 19:14:02,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:02,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:14:02,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:02,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:14:02,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:14:02,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-06-21 19:14:02,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 54 transitions, 326 flow. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:02,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:02,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-06-21 19:14:02,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:02,662 INFO L124 PetriNetUnfolderBase]: 353/712 cut-off events. [2024-06-21 19:14:02,663 INFO L125 PetriNetUnfolderBase]: For 1195/1203 co-relation queries the response was YES. [2024-06-21 19:14:02,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2242 conditions, 712 events. 353/712 cut-off events. For 1195/1203 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4139 event pairs, 95 based on Foata normal form. 18/693 useless extension candidates. Maximal degree in co-relation 2216. Up to 238 conditions per place. [2024-06-21 19:14:02,667 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 40 selfloop transitions, 19 changer transitions 0/70 dead transitions. [2024-06-21 19:14:02,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 70 transitions, 508 flow [2024-06-21 19:14:02,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:14:02,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:14:02,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 123 transitions. [2024-06-21 19:14:02,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4880952380952381 [2024-06-21 19:14:02,669 INFO L175 Difference]: Start difference. First operand has 61 places, 54 transitions, 326 flow. Second operand 6 states and 123 transitions. [2024-06-21 19:14:02,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 70 transitions, 508 flow [2024-06-21 19:14:02,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 70 transitions, 488 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-21 19:14:02,673 INFO L231 Difference]: Finished difference. Result has 66 places, 57 transitions, 393 flow [2024-06-21 19:14:02,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=393, PETRI_PLACES=66, PETRI_TRANSITIONS=57} [2024-06-21 19:14:02,674 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 23 predicate places. [2024-06-21 19:14:02,674 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 57 transitions, 393 flow [2024-06-21 19:14:02,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:02,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:02,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:02,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-21 19:14:02,675 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 19:14:02,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:02,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1339482017, now seen corresponding path program 1 times [2024-06-21 19:14:02,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:02,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895946692] [2024-06-21 19:14:02,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:02,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:02,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:03,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:03,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:03,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895946692] [2024-06-21 19:14:03,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895946692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:03,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:03,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:14:03,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811249311] [2024-06-21 19:14:03,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:03,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:14:03,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:03,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:14:03,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:14:03,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 42 [2024-06-21 19:14:03,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 57 transitions, 393 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:03,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:03,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 42 [2024-06-21 19:14:03,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:03,537 INFO L124 PetriNetUnfolderBase]: 365/784 cut-off events. [2024-06-21 19:14:03,538 INFO L125 PetriNetUnfolderBase]: For 1573/1587 co-relation queries the response was YES. [2024-06-21 19:14:03,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2597 conditions, 784 events. 365/784 cut-off events. For 1573/1587 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4677 event pairs, 90 based on Foata normal form. 6/759 useless extension candidates. Maximal degree in co-relation 2569. Up to 477 conditions per place. [2024-06-21 19:14:03,542 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 42 selfloop transitions, 23 changer transitions 0/77 dead transitions. [2024-06-21 19:14:03,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 77 transitions, 583 flow [2024-06-21 19:14:03,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:14:03,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:14:03,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-21 19:14:03,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-06-21 19:14:03,544 INFO L175 Difference]: Start difference. First operand has 66 places, 57 transitions, 393 flow. Second operand 6 states and 140 transitions. [2024-06-21 19:14:03,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 77 transitions, 583 flow [2024-06-21 19:14:03,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 77 transitions, 556 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-21 19:14:03,549 INFO L231 Difference]: Finished difference. Result has 69 places, 58 transitions, 435 flow [2024-06-21 19:14:03,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=435, PETRI_PLACES=69, PETRI_TRANSITIONS=58} [2024-06-21 19:14:03,549 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 26 predicate places. [2024-06-21 19:14:03,549 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 58 transitions, 435 flow [2024-06-21 19:14:03,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:03,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:03,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:03,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-21 19:14:03,550 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 19:14:03,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:03,551 INFO L85 PathProgramCache]: Analyzing trace with hash -337967263, now seen corresponding path program 2 times [2024-06-21 19:14:03,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:03,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143225809] [2024-06-21 19:14:03,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:03,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:03,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:04,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:04,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:04,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143225809] [2024-06-21 19:14:04,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143225809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:04,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:04,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:14:04,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401990903] [2024-06-21 19:14:04,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:04,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:14:04,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:04,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:14:04,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:14:04,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 42 [2024-06-21 19:14:04,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 58 transitions, 435 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:04,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:04,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 42 [2024-06-21 19:14:04,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:04,695 INFO L124 PetriNetUnfolderBase]: 357/756 cut-off events. [2024-06-21 19:14:04,696 INFO L125 PetriNetUnfolderBase]: For 1677/1685 co-relation queries the response was YES. [2024-06-21 19:14:04,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2567 conditions, 756 events. 357/756 cut-off events. For 1677/1685 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4478 event pairs, 102 based on Foata normal form. 4/723 useless extension candidates. Maximal degree in co-relation 2539. Up to 449 conditions per place. [2024-06-21 19:14:04,701 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 38 selfloop transitions, 22 changer transitions 0/72 dead transitions. [2024-06-21 19:14:04,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 72 transitions, 587 flow [2024-06-21 19:14:04,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:14:04,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:14:04,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-06-21 19:14:04,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-06-21 19:14:04,702 INFO L175 Difference]: Start difference. First operand has 69 places, 58 transitions, 435 flow. Second operand 6 states and 133 transitions. [2024-06-21 19:14:04,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 72 transitions, 587 flow [2024-06-21 19:14:04,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 72 transitions, 540 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-21 19:14:04,708 INFO L231 Difference]: Finished difference. Result has 71 places, 58 transitions, 436 flow [2024-06-21 19:14:04,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=436, PETRI_PLACES=71, PETRI_TRANSITIONS=58} [2024-06-21 19:14:04,710 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 28 predicate places. [2024-06-21 19:14:04,710 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 58 transitions, 436 flow [2024-06-21 19:14:04,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:04,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:04,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:04,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-21 19:14:04,711 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 19:14:04,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:04,711 INFO L85 PathProgramCache]: Analyzing trace with hash 212979990, now seen corresponding path program 1 times [2024-06-21 19:14:04,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:04,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826689827] [2024-06-21 19:14:04,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:04,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:04,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:05,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:05,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:05,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826689827] [2024-06-21 19:14:05,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826689827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:05,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:05,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:14:05,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888377412] [2024-06-21 19:14:05,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:05,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:14:05,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:05,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:14:05,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:14:05,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-06-21 19:14:05,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 58 transitions, 436 flow. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:05,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:05,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-06-21 19:14:05,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:05,323 INFO L124 PetriNetUnfolderBase]: 344/717 cut-off events. [2024-06-21 19:14:05,323 INFO L125 PetriNetUnfolderBase]: For 1771/1785 co-relation queries the response was YES. [2024-06-21 19:14:05,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2475 conditions, 717 events. 344/717 cut-off events. For 1771/1785 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4143 event pairs, 149 based on Foata normal form. 4/694 useless extension candidates. Maximal degree in co-relation 2445. Up to 535 conditions per place. [2024-06-21 19:14:05,328 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 55 selfloop transitions, 10 changer transitions 1/77 dead transitions. [2024-06-21 19:14:05,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 77 transitions, 637 flow [2024-06-21 19:14:05,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:14:05,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:14:05,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 144 transitions. [2024-06-21 19:14:05,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-06-21 19:14:05,329 INFO L175 Difference]: Start difference. First operand has 71 places, 58 transitions, 436 flow. Second operand 7 states and 144 transitions. [2024-06-21 19:14:05,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 77 transitions, 637 flow [2024-06-21 19:14:05,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 77 transitions, 570 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-21 19:14:05,335 INFO L231 Difference]: Finished difference. Result has 74 places, 60 transitions, 419 flow [2024-06-21 19:14:05,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=419, PETRI_PLACES=74, PETRI_TRANSITIONS=60} [2024-06-21 19:14:05,336 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 31 predicate places. [2024-06-21 19:14:05,336 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 60 transitions, 419 flow [2024-06-21 19:14:05,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:05,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:05,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:05,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-21 19:14:05,337 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 19:14:05,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:05,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1895145592, now seen corresponding path program 2 times [2024-06-21 19:14:05,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:05,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536617538] [2024-06-21 19:14:05,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:05,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:05,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:05,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:05,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:05,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536617538] [2024-06-21 19:14:05,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536617538] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:05,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:05,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 19:14:05,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153497677] [2024-06-21 19:14:05,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:05,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 19:14:05,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:05,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 19:14:05,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-21 19:14:05,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 42 [2024-06-21 19:14:05,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 60 transitions, 419 flow. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:05,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:05,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 42 [2024-06-21 19:14:05,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:06,024 INFO L124 PetriNetUnfolderBase]: 319/638 cut-off events. [2024-06-21 19:14:06,025 INFO L125 PetriNetUnfolderBase]: For 1791/1799 co-relation queries the response was YES. [2024-06-21 19:14:06,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2213 conditions, 638 events. 319/638 cut-off events. For 1791/1799 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3653 event pairs, 88 based on Foata normal form. 6/615 useless extension candidates. Maximal degree in co-relation 2182. Up to 249 conditions per place. [2024-06-21 19:14:06,029 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 40 selfloop transitions, 20 changer transitions 0/72 dead transitions. [2024-06-21 19:14:06,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 72 transitions, 593 flow [2024-06-21 19:14:06,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 19:14:06,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 19:14:06,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 112 transitions. [2024-06-21 19:14:06,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-06-21 19:14:06,030 INFO L175 Difference]: Start difference. First operand has 74 places, 60 transitions, 419 flow. Second operand 5 states and 112 transitions. [2024-06-21 19:14:06,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 72 transitions, 593 flow [2024-06-21 19:14:06,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 72 transitions, 560 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-21 19:14:06,036 INFO L231 Difference]: Finished difference. Result has 75 places, 62 transitions, 456 flow [2024-06-21 19:14:06,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=456, PETRI_PLACES=75, PETRI_TRANSITIONS=62} [2024-06-21 19:14:06,038 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 32 predicate places. [2024-06-21 19:14:06,038 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 62 transitions, 456 flow [2024-06-21 19:14:06,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:06,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:06,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:06,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-21 19:14:06,039 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 19:14:06,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:06,039 INFO L85 PathProgramCache]: Analyzing trace with hash 2142808606, now seen corresponding path program 1 times [2024-06-21 19:14:06,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:06,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73279276] [2024-06-21 19:14:06,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:06,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:06,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:06,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:06,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:06,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73279276] [2024-06-21 19:14:06,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73279276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:06,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:06,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:14:06,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959138967] [2024-06-21 19:14:06,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:06,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:14:06,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:06,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:14:06,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:14:06,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-06-21 19:14:06,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 62 transitions, 456 flow. Second operand has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 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) [2024-06-21 19:14:06,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:06,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-06-21 19:14:06,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:07,200 INFO L124 PetriNetUnfolderBase]: 351/738 cut-off events. [2024-06-21 19:14:07,201 INFO L125 PetriNetUnfolderBase]: For 2392/2406 co-relation queries the response was YES. [2024-06-21 19:14:07,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2440 conditions, 738 events. 351/738 cut-off events. For 2392/2406 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4282 event pairs, 56 based on Foata normal form. 18/734 useless extension candidates. Maximal degree in co-relation 2409. Up to 282 conditions per place. [2024-06-21 19:14:07,205 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 53 selfloop transitions, 19 changer transitions 6/89 dead transitions. [2024-06-21 19:14:07,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 89 transitions, 690 flow [2024-06-21 19:14:07,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:14:07,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:14:07,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 172 transitions. [2024-06-21 19:14:07,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2024-06-21 19:14:07,206 INFO L175 Difference]: Start difference. First operand has 75 places, 62 transitions, 456 flow. Second operand 8 states and 172 transitions. [2024-06-21 19:14:07,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 89 transitions, 690 flow [2024-06-21 19:14:07,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 89 transitions, 642 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-21 19:14:07,212 INFO L231 Difference]: Finished difference. Result has 81 places, 58 transitions, 438 flow [2024-06-21 19:14:07,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=438, PETRI_PLACES=81, PETRI_TRANSITIONS=58} [2024-06-21 19:14:07,212 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 38 predicate places. [2024-06-21 19:14:07,212 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 58 transitions, 438 flow [2024-06-21 19:14:07,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 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) [2024-06-21 19:14:07,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:07,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:07,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-21 19:14:07,213 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 19:14:07,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:07,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1861697694, now seen corresponding path program 2 times [2024-06-21 19:14:07,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:07,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815968469] [2024-06-21 19:14:07,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:07,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:07,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:08,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:08,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:08,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815968469] [2024-06-21 19:14:08,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815968469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:08,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:08,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:14:08,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111978878] [2024-06-21 19:14:08,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:08,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:14:08,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:08,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:14:08,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:14:08,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 42 [2024-06-21 19:14:08,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 58 transitions, 438 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:08,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:08,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 42 [2024-06-21 19:14:08,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:08,272 INFO L124 PetriNetUnfolderBase]: 307/696 cut-off events. [2024-06-21 19:14:08,272 INFO L125 PetriNetUnfolderBase]: For 3314/3314 co-relation queries the response was YES. [2024-06-21 19:14:08,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2344 conditions, 696 events. 307/696 cut-off events. For 3314/3314 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4288 event pairs, 98 based on Foata normal form. 12/688 useless extension candidates. Maximal degree in co-relation 2311. Up to 178 conditions per place. [2024-06-21 19:14:08,277 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 38 selfloop transitions, 10 changer transitions 14/74 dead transitions. [2024-06-21 19:14:08,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 74 transitions, 628 flow [2024-06-21 19:14:08,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:14:08,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:14:08,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2024-06-21 19:14:08,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-06-21 19:14:08,279 INFO L175 Difference]: Start difference. First operand has 81 places, 58 transitions, 438 flow. Second operand 6 states and 132 transitions. [2024-06-21 19:14:08,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 74 transitions, 628 flow [2024-06-21 19:14:08,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 74 transitions, 551 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-21 19:14:08,288 INFO L231 Difference]: Finished difference. Result has 77 places, 49 transitions, 302 flow [2024-06-21 19:14:08,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=302, PETRI_PLACES=77, PETRI_TRANSITIONS=49} [2024-06-21 19:14:08,289 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 34 predicate places. [2024-06-21 19:14:08,289 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 49 transitions, 302 flow [2024-06-21 19:14:08,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:08,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:08,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:08,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-21 19:14:08,289 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 19:14:08,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:08,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1604989794, now seen corresponding path program 3 times [2024-06-21 19:14:08,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:08,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767873170] [2024-06-21 19:14:08,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:08,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:08,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:09,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:09,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:09,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767873170] [2024-06-21 19:14:09,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767873170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:09,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:09,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:14:09,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15514273] [2024-06-21 19:14:09,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:09,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:14:09,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:09,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:14:09,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:14:09,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 42 [2024-06-21 19:14:09,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 49 transitions, 302 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:09,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:09,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 42 [2024-06-21 19:14:09,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:09,233 INFO L124 PetriNetUnfolderBase]: 229/556 cut-off events. [2024-06-21 19:14:09,234 INFO L125 PetriNetUnfolderBase]: For 2668/2668 co-relation queries the response was YES. [2024-06-21 19:14:09,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1688 conditions, 556 events. 229/556 cut-off events. For 2668/2668 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3328 event pairs, 104 based on Foata normal form. 12/544 useless extension candidates. Maximal degree in co-relation 1659. Up to 207 conditions per place. [2024-06-21 19:14:09,236 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 27 selfloop transitions, 9 changer transitions 14/62 dead transitions. [2024-06-21 19:14:09,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 62 transitions, 428 flow [2024-06-21 19:14:09,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:14:09,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:14:09,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 131 transitions. [2024-06-21 19:14:09,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5198412698412699 [2024-06-21 19:14:09,238 INFO L175 Difference]: Start difference. First operand has 77 places, 49 transitions, 302 flow. Second operand 6 states and 131 transitions. [2024-06-21 19:14:09,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 62 transitions, 428 flow [2024-06-21 19:14:09,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 62 transitions, 400 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-21 19:14:09,241 INFO L231 Difference]: Finished difference. Result has 72 places, 39 transitions, 202 flow [2024-06-21 19:14:09,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=202, PETRI_PLACES=72, PETRI_TRANSITIONS=39} [2024-06-21 19:14:09,242 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 29 predicate places. [2024-06-21 19:14:09,242 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 39 transitions, 202 flow [2024-06-21 19:14:09,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:09,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:09,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:09,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-21 19:14:09,243 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 19:14:09,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:09,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1372473081, now seen corresponding path program 1 times [2024-06-21 19:14:09,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:09,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071606393] [2024-06-21 19:14:09,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:09,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:09,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:10,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:10,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:10,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071606393] [2024-06-21 19:14:10,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071606393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:10,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:10,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:14:10,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820687905] [2024-06-21 19:14:10,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:10,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:14:10,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:10,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:14:10,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:14:10,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 42 [2024-06-21 19:14:10,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 39 transitions, 202 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:10,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:10,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 42 [2024-06-21 19:14:10,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:10,362 INFO L124 PetriNetUnfolderBase]: 179/412 cut-off events. [2024-06-21 19:14:10,362 INFO L125 PetriNetUnfolderBase]: For 1472/1472 co-relation queries the response was YES. [2024-06-21 19:14:10,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1217 conditions, 412 events. 179/412 cut-off events. For 1472/1472 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2329 event pairs, 62 based on Foata normal form. 12/408 useless extension candidates. Maximal degree in co-relation 1200. Up to 218 conditions per place. [2024-06-21 19:14:10,364 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 27 selfloop transitions, 10 changer transitions 1/50 dead transitions. [2024-06-21 19:14:10,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 50 transitions, 308 flow [2024-06-21 19:14:10,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:14:10,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:14:10,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 142 transitions. [2024-06-21 19:14:10,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48299319727891155 [2024-06-21 19:14:10,366 INFO L175 Difference]: Start difference. First operand has 72 places, 39 transitions, 202 flow. Second operand 7 states and 142 transitions. [2024-06-21 19:14:10,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 50 transitions, 308 flow [2024-06-21 19:14:10,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 50 transitions, 251 flow, removed 9 selfloop flow, removed 13 redundant places. [2024-06-21 19:14:10,368 INFO L231 Difference]: Finished difference. Result has 63 places, 40 transitions, 181 flow [2024-06-21 19:14:10,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=181, PETRI_PLACES=63, PETRI_TRANSITIONS=40} [2024-06-21 19:14:10,369 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 20 predicate places. [2024-06-21 19:14:10,369 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 40 transitions, 181 flow [2024-06-21 19:14:10,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:10,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:10,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:10,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-21 19:14:10,370 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 19:14:10,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:10,370 INFO L85 PathProgramCache]: Analyzing trace with hash -168744697, now seen corresponding path program 2 times [2024-06-21 19:14:10,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:10,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289274789] [2024-06-21 19:14:10,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:10,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:10,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:11,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:11,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:11,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289274789] [2024-06-21 19:14:11,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289274789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:11,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:11,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:14:11,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138021533] [2024-06-21 19:14:11,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:11,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:14:11,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:11,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:14:11,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:14:11,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 42 [2024-06-21 19:14:11,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 40 transitions, 181 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:11,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:11,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 42 [2024-06-21 19:14:11,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:11,483 INFO L124 PetriNetUnfolderBase]: 187/452 cut-off events. [2024-06-21 19:14:11,483 INFO L125 PetriNetUnfolderBase]: For 1094/1094 co-relation queries the response was YES. [2024-06-21 19:14:11,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1161 conditions, 452 events. 187/452 cut-off events. For 1094/1094 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2781 event pairs, 86 based on Foata normal form. 12/443 useless extension candidates. Maximal degree in co-relation 1148. Up to 223 conditions per place. [2024-06-21 19:14:11,485 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 27 selfloop transitions, 8 changer transitions 4/51 dead transitions. [2024-06-21 19:14:11,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 51 transitions, 289 flow [2024-06-21 19:14:11,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:14:11,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:14:11,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 128 transitions. [2024-06-21 19:14:11,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079365079365079 [2024-06-21 19:14:11,487 INFO L175 Difference]: Start difference. First operand has 63 places, 40 transitions, 181 flow. Second operand 6 states and 128 transitions. [2024-06-21 19:14:11,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 51 transitions, 289 flow [2024-06-21 19:14:11,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 51 transitions, 265 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-21 19:14:11,489 INFO L231 Difference]: Finished difference. Result has 64 places, 38 transitions, 163 flow [2024-06-21 19:14:11,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=163, PETRI_PLACES=64, PETRI_TRANSITIONS=38} [2024-06-21 19:14:11,489 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 21 predicate places. [2024-06-21 19:14:11,489 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 38 transitions, 163 flow [2024-06-21 19:14:11,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:11,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:11,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:11,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-21 19:14:11,490 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 19:14:11,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:11,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1859858669, now seen corresponding path program 1 times [2024-06-21 19:14:11,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:11,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341824663] [2024-06-21 19:14:11,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:11,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:11,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:12,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:12,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:12,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341824663] [2024-06-21 19:14:12,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341824663] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:12,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:12,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:14:12,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078041850] [2024-06-21 19:14:12,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:12,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:14:12,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:12,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:14:12,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:14:12,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-06-21 19:14:12,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 38 transitions, 163 flow. Second operand has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 9 states have internal predecessors, (143), 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) [2024-06-21 19:14:12,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:12,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-06-21 19:14:12,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:12,794 INFO L124 PetriNetUnfolderBase]: 161/412 cut-off events. [2024-06-21 19:14:12,794 INFO L125 PetriNetUnfolderBase]: For 1132/1132 co-relation queries the response was YES. [2024-06-21 19:14:12,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1057 conditions, 412 events. 161/412 cut-off events. For 1132/1132 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2392 event pairs, 52 based on Foata normal form. 8/406 useless extension candidates. Maximal degree in co-relation 1043. Up to 197 conditions per place. [2024-06-21 19:14:12,796 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 25 selfloop transitions, 8 changer transitions 14/58 dead transitions. [2024-06-21 19:14:12,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 58 transitions, 316 flow [2024-06-21 19:14:12,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:14:12,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:14:12,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-21 19:14:12,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4497354497354497 [2024-06-21 19:14:12,798 INFO L175 Difference]: Start difference. First operand has 64 places, 38 transitions, 163 flow. Second operand 9 states and 170 transitions. [2024-06-21 19:14:12,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 58 transitions, 316 flow [2024-06-21 19:14:12,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 58 transitions, 278 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-21 19:14:12,800 INFO L231 Difference]: Finished difference. Result has 68 places, 38 transitions, 162 flow [2024-06-21 19:14:12,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=162, PETRI_PLACES=68, PETRI_TRANSITIONS=38} [2024-06-21 19:14:12,801 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 25 predicate places. [2024-06-21 19:14:12,801 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 38 transitions, 162 flow [2024-06-21 19:14:12,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 9 states have internal predecessors, (143), 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) [2024-06-21 19:14:12,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:12,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:12,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-21 19:14:12,802 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 19:14:12,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:12,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1536700831, now seen corresponding path program 2 times [2024-06-21 19:14:12,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:12,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464911414] [2024-06-21 19:14:12,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:12,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:12,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:13,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:13,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:13,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464911414] [2024-06-21 19:14:13,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464911414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:13,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:13,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:14:13,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141715671] [2024-06-21 19:14:13,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:13,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:14:13,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:13,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:14:13,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:14:13,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-06-21 19:14:13,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 38 transitions, 162 flow. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 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) [2024-06-21 19:14:13,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:13,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-06-21 19:14:13,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:14,033 INFO L124 PetriNetUnfolderBase]: 137/362 cut-off events. [2024-06-21 19:14:14,034 INFO L125 PetriNetUnfolderBase]: For 1080/1084 co-relation queries the response was YES. [2024-06-21 19:14:14,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 912 conditions, 362 events. 137/362 cut-off events. For 1080/1084 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2049 event pairs, 64 based on Foata normal form. 8/357 useless extension candidates. Maximal degree in co-relation 896. Up to 168 conditions per place. [2024-06-21 19:14:14,035 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 21 selfloop transitions, 3 changer transitions 18/53 dead transitions. [2024-06-21 19:14:14,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 53 transitions, 278 flow [2024-06-21 19:14:14,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:14:14,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:14:14,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-21 19:14:14,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-21 19:14:14,037 INFO L175 Difference]: Start difference. First operand has 68 places, 38 transitions, 162 flow. Second operand 8 states and 152 transitions. [2024-06-21 19:14:14,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 53 transitions, 278 flow [2024-06-21 19:14:14,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 53 transitions, 253 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-21 19:14:14,038 INFO L231 Difference]: Finished difference. Result has 65 places, 34 transitions, 124 flow [2024-06-21 19:14:14,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=124, PETRI_PLACES=65, PETRI_TRANSITIONS=34} [2024-06-21 19:14:14,039 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 22 predicate places. [2024-06-21 19:14:14,039 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 34 transitions, 124 flow [2024-06-21 19:14:14,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 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) [2024-06-21 19:14:14,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:14,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:14,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-21 19:14:14,040 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 19:14:14,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:14,040 INFO L85 PathProgramCache]: Analyzing trace with hash -2138857103, now seen corresponding path program 3 times [2024-06-21 19:14:14,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:14,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156730748] [2024-06-21 19:14:14,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:14,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:14,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:14,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:14,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:14,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156730748] [2024-06-21 19:14:14,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156730748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:14,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:14,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:14:14,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762454348] [2024-06-21 19:14:14,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:14,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:14:14,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:14,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:14:14,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:14:14,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 42 [2024-06-21 19:14:14,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 34 transitions, 124 flow. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 7 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) [2024-06-21 19:14:14,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:14,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 42 [2024-06-21 19:14:14,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:15,099 INFO L124 PetriNetUnfolderBase]: 81/216 cut-off events. [2024-06-21 19:14:15,099 INFO L125 PetriNetUnfolderBase]: For 680/680 co-relation queries the response was YES. [2024-06-21 19:14:15,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 518 conditions, 216 events. 81/216 cut-off events. For 680/680 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1034 event pairs, 34 based on Foata normal form. 8/220 useless extension candidates. Maximal degree in co-relation 504. Up to 83 conditions per place. [2024-06-21 19:14:15,100 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 18 selfloop transitions, 3 changer transitions 12/45 dead transitions. [2024-06-21 19:14:15,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 45 transitions, 212 flow [2024-06-21 19:14:15,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:14:15,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:14:15,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2024-06-21 19:14:15,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47278911564625853 [2024-06-21 19:14:15,101 INFO L175 Difference]: Start difference. First operand has 65 places, 34 transitions, 124 flow. Second operand 7 states and 139 transitions. [2024-06-21 19:14:15,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 45 transitions, 212 flow [2024-06-21 19:14:15,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 45 transitions, 196 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-21 19:14:15,102 INFO L231 Difference]: Finished difference. Result has 57 places, 31 transitions, 100 flow [2024-06-21 19:14:15,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=100, PETRI_PLACES=57, PETRI_TRANSITIONS=31} [2024-06-21 19:14:15,103 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 14 predicate places. [2024-06-21 19:14:15,103 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 31 transitions, 100 flow [2024-06-21 19:14:15,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 7 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) [2024-06-21 19:14:15,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:15,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:15,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-21 19:14:15,104 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 19:14:15,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:15,104 INFO L85 PathProgramCache]: Analyzing trace with hash 537352417, now seen corresponding path program 4 times [2024-06-21 19:14:15,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:15,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905785101] [2024-06-21 19:14:15,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:15,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:15,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:16,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:16,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:16,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905785101] [2024-06-21 19:14:16,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905785101] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:16,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:16,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:14:16,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077404679] [2024-06-21 19:14:16,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:16,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:14:16,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:16,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:14:16,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:14:16,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 42 [2024-06-21 19:14:16,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 31 transitions, 100 flow. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 7 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) [2024-06-21 19:14:16,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:16,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 42 [2024-06-21 19:14:16,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:16,605 INFO L124 PetriNetUnfolderBase]: 35/104 cut-off events. [2024-06-21 19:14:16,605 INFO L125 PetriNetUnfolderBase]: For 212/212 co-relation queries the response was YES. [2024-06-21 19:14:16,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 224 conditions, 104 events. 35/104 cut-off events. For 212/212 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 336 event pairs, 0 based on Foata normal form. 8/112 useless extension candidates. Maximal degree in co-relation 213. Up to 40 conditions per place. [2024-06-21 19:14:16,606 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 0 selfloop transitions, 0 changer transitions 37/37 dead transitions. [2024-06-21 19:14:16,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 37 transitions, 148 flow [2024-06-21 19:14:16,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:14:16,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:14:16,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 131 transitions. [2024-06-21 19:14:16,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.445578231292517 [2024-06-21 19:14:16,607 INFO L175 Difference]: Start difference. First operand has 57 places, 31 transitions, 100 flow. Second operand 7 states and 131 transitions. [2024-06-21 19:14:16,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 37 transitions, 148 flow [2024-06-21 19:14:16,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 37 transitions, 134 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-21 19:14:16,608 INFO L231 Difference]: Finished difference. Result has 49 places, 0 transitions, 0 flow [2024-06-21 19:14:16,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=49, PETRI_TRANSITIONS=0} [2024-06-21 19:14:16,608 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 6 predicate places. [2024-06-21 19:14:16,608 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 0 transitions, 0 flow [2024-06-21 19:14:16,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 7 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) [2024-06-21 19:14:16,614 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 6 remaining) [2024-06-21 19:14:16,614 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 6 remaining) [2024-06-21 19:14:16,615 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 6 remaining) [2024-06-21 19:14:16,615 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-06-21 19:14:16,615 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2024-06-21 19:14:16,615 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-06-21 19:14:16,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-21 19:14:16,615 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 3, 2, 2, 2, 1, 1, 1] [2024-06-21 19:14:16,618 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-21 19:14:16,618 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-21 19:14:16,621 INFO L507 ceAbstractionStarter]: Automizer considered 3 witness invariants [2024-06-21 19:14:16,621 INFO L508 ceAbstractionStarter]: WitnessConsidered=3 [2024-06-21 19:14:16,622 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 07:14:16 BasicIcfg [2024-06-21 19:14:16,622 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-21 19:14:16,623 INFO L158 Benchmark]: Toolchain (without parser) took 20309.45ms. Allocated memory was 136.3MB in the beginning and 1.1GB in the end (delta: 916.5MB). Free memory was 94.4MB in the beginning and 546.7MB in the end (delta: -452.3MB). Peak memory consumption was 463.7MB. Max. memory is 16.1GB. [2024-06-21 19:14:16,623 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 136.3MB. Free memory was 109.5MB in the beginning and 109.3MB in the end (delta: 151.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 19:14:16,624 INFO L158 Benchmark]: Witness Parser took 0.18ms. Allocated memory is still 136.3MB. Free memory is still 97.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 19:14:16,624 INFO L158 Benchmark]: CACSL2BoogieTranslator took 532.19ms. Allocated memory is still 136.3MB. Free memory was 94.0MB in the beginning and 62.1MB in the end (delta: 31.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-06-21 19:14:16,624 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.13ms. Allocated memory is still 136.3MB. Free memory was 62.1MB in the beginning and 58.4MB in the end (delta: 3.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-21 19:14:16,624 INFO L158 Benchmark]: Boogie Preprocessor took 82.92ms. Allocated memory is still 136.3MB. Free memory was 58.4MB in the beginning and 102.0MB in the end (delta: -43.6MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. [2024-06-21 19:14:16,625 INFO L158 Benchmark]: RCFGBuilder took 1021.41ms. Allocated memory was 136.3MB in the beginning and 195.0MB in the end (delta: 58.7MB). Free memory was 102.0MB in the beginning and 105.6MB in the end (delta: -3.6MB). Peak memory consumption was 61.7MB. Max. memory is 16.1GB. [2024-06-21 19:14:16,625 INFO L158 Benchmark]: TraceAbstraction took 18616.32ms. Allocated memory was 195.0MB in the beginning and 1.1GB in the end (delta: 857.7MB). Free memory was 105.6MB in the beginning and 546.7MB in the end (delta: -441.1MB). Peak memory consumption was 415.6MB. Max. memory is 16.1GB. [2024-06-21 19:14:16,626 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 136.3MB. Free memory was 109.5MB in the beginning and 109.3MB in the end (delta: 151.0kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.18ms. Allocated memory is still 136.3MB. Free memory is still 97.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 532.19ms. Allocated memory is still 136.3MB. Free memory was 94.0MB in the beginning and 62.1MB in the end (delta: 31.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.13ms. Allocated memory is still 136.3MB. Free memory was 62.1MB in the beginning and 58.4MB in the end (delta: 3.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 82.92ms. Allocated memory is still 136.3MB. Free memory was 58.4MB in the beginning and 102.0MB in the end (delta: -43.6MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. * RCFGBuilder took 1021.41ms. Allocated memory was 136.3MB in the beginning and 195.0MB in the end (delta: 58.7MB). Free memory was 102.0MB in the beginning and 105.6MB in the end (delta: -3.6MB). Peak memory consumption was 61.7MB. Max. memory is 16.1GB. * TraceAbstraction took 18616.32ms. Allocated memory was 195.0MB in the beginning and 1.1GB in the end (delta: 857.7MB). Free memory was 105.6MB in the beginning and 546.7MB in the end (delta: -441.1MB). Peak memory consumption was 415.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 860]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 862]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 863]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 67 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 18.5s, OverallIterations: 19, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 4.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 281 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 279 mSDsluCounter, 11 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 72 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2338 IncrementalHoareTripleChecker+Invalid, 2410 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 72 mSolverCounterUnsat, 7 mSDtfsCounter, 2338 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 105 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=456occurred in iteration=10, InterpolantAutomatonStates: 118, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 13.6s InterpolantComputationTime, 351 NumberOfCodeBlocks, 351 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 332 ConstructedInterpolants, 0 QuantifiedInterpolants, 8039 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 19 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-21 19:14:16,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE